Question 1

Which organ is responsible for producing insulin?

Accepted Answer

Answer reason: C) Pancreas Insulin is produced by beta cells in the islets of Langerhans within the pancreas. This hormone lowers blood glucose by promoting cellular glucose uptake and storage as glycogen and fat. The liver is a major target organ for insulin and stores/releases glucose, but it does not produce insulin. The stomach is involved in digestion and does not produce insulin.
Category reason: This question tests knowledge of which endocrine organ produces insulin, a core concept of hormone production and regulation within the Endocrine System.

Question 2

Which hormones regulate blood sugar together in humans?

Accepted Answer

Answer reason: Insulin & Glucagon Insulin (from pancreatic beta cells) lowers blood glucose by promoting cellular glucose uptake and glycogen synthesis, while glucagon (from alpha cells) raises blood glucose by stimulating hepatic glycogenolysis and gluconeogenesis. Together they provide the primary homeostatic counter-regulation of blood sugar in humans, especially between fed and fasting states. Adrenaline and cortisol can increase glucose during stress but are not the main paired regulators of routine glucose homeostasis.
Category reason: This question tests hormone control of glucose homeostasis, a core concept of the Endocrine System rather than nursing interventions or clinical prioritization.

Question 3

Which organ regulates hormone levels and maintains body metabolism?

Accepted Answer

Answer reason: Thyroid The thyroid gland secretes T3 and T4, which set basal metabolic rate and regulate overall energy use, heat production, and many organ functions. Through negative feedback with the hypothalamus and pituitary (TRH/TSH), it helps regulate hormone levels in a way that directly maintains metabolism. The pancreas primarily regulates blood glucose, adrenal glands mediate stress hormones, and kidneys have important endocrine roles but are not the primary controller of whole-body metabolic rate.
Category reason: This question tests foundational endocrine physiology—identifying which organ’s hormones (T3/T4) primarily regulate basal metabolic rate and metabolism—so it belongs to the Endocrine System.

Question 4

In human body where is pituitary gland located?

Accepted Answer

Answer reason: Brain The pituitary gland is located at the base of the brain, sitting in the sella turcica of the sphenoid bone and connected to the hypothalamus via the pituitary stalk. It is the “master” endocrine gland that secretes hormones regulating growth, thyroid function, adrenal function, and reproduction. Therefore, among the listed body locations, the brain is correct.
Category reason: This is a foundational question about the location of an endocrine gland (pituitary) within the body, which is primarily studied under the Endocrine System rather than nursing interventions or prioritization.

Question 5

In growing children, growth hormone deficiency results in short stature and very slow growth rates. Short stature may result from which of the following?

Accepted Answer

Answer reason: Anterior pituitary gland hypofunction Growth hormone (somatotropin) is produced by the anterior pituitary; hypofunction leads to decreased GH secretion and results in growth failure/short stature in children. Posterior pituitary hyperfunction primarily affects ADH/oxytocin and would not cause isolated short stature. Parathyroid and thyroid hyperfunction can affect metabolism and calcium balance, but they are not the primary cause of GH deficiency-related short stature.
Category reason: This question tests the physiologic source and endocrine regulation of growth hormone and its deficiency effects, which is core content of the Endocrine System rather than a nursing intervention or prioritization scenario.

Question 6

Which hormone is primarily responsible for increasing blood glucose levels?

Accepted Answer

Answer reason: Glucagon Glucagon, secreted by pancreatic alpha cells, increases blood glucose by stimulating hepatic glycogenolysis and gluconeogenesis. Insulin has the opposite effect by promoting glucose uptake and storage, thereby lowering blood glucose. Calcitonin primarily regulates calcium and phosphate metabolism and does not raise blood glucose as its main function.
Category reason: This question tests hormonal regulation of blood glucose homeostasis, a core topic within the Endocrine System.

Question 7

Growth hormone does not cause?

Accepted Answer

Answer reason: Hypothyroidism Excess growth hormone causes gigantism (before epiphyseal closure) and acromegaly (after closure). GH also has anti-insulin (diabetogenic) effects by decreasing peripheral glucose uptake and increasing hepatic gluconeogenesis, which can lead to hyperglycemia/diabetes mellitus. Hypothyroidism results from deficient thyroid hormone production (or impaired TSH stimulation), not from growth hormone effects.
Category reason: This is a foundational physiology/endocrinology question testing the systemic effects of growth hormone and related endocrine disorders, which fits best under the Endocrine System.

Question 8

The medical term for high blood sugar level is?

Accepted Answer

Answer reason: Hyperglycemia Hyperglycemia is the clinical term for elevated blood glucose levels, commonly seen in diabetes mellitus or acute stress states. In contrast, hypoglycemia refers to low blood glucose. Hyperthermia and hypothermia describe abnormally high and low body temperature, not blood sugar levels.
Category reason: This question tests terminology and concepts related to blood glucose regulation and diabetes, which are primarily part of the Endocrine System.

Question 9

True or False Patients with Addison’s disease require lifelong corticosteroid therapy.

Accepted Answer

Answer reason: True Addison’s disease (primary adrenal insufficiency) causes deficient cortisol and often aldosterone production due to adrenal cortex failure. Because the adrenal glands cannot reliably produce adequate steroids, patients generally require lifelong glucocorticoid replacement (and mineralocorticoid replacement when indicated). Doses must be adjusted during stress (e.g., illness, surgery) to prevent adrenal crisis. Stopping replacement abruptly can lead to life-threatening hypotension, hypoglycemia, and shock.
Category reason: This item tests understanding of adrenal hormone deficiency and chronic steroid replacement, which is core Endocrine System physiology/pathophysiology rather than a nursing prioritization or intervention scenario.

Question 10

Which hormone stimulates milk secretion after childbirth?

Accepted Answer

Answer reason: Prolactin Prolactin from the anterior pituitary drives milk production (lactogenesis) in the mammary glands after delivery, when estrogen and progesterone levels drop. Oxytocin primarily causes milk ejection (let-down) by contracting myoepithelial cells, not milk synthesis. Estrogen and progesterone support breast development during pregnancy but inhibit full lactation until postpartum withdrawal.
Category reason: This is a foundational question about hormonal control of lactation, which is an endocrine regulation topic rather than a nursing care decision.

Question 11

Which hormone plays the primary role in counteracting Hypoglycemia?

Accepted Answer

Answer reason: Glucagon It is the main rapid counter-regulatory hormone released from pancreatic alpha cells when blood glucose falls. It raises plasma glucose primarily by stimulating hepatic glycogenolysis and gluconeogenesis. Insulin instead lowers blood glucose, while cortisol has slower, longer-term glucose-raising effects and thyroxine is not a primary acute defense against low glucose.
Category reason: This question tests hormonal regulation of blood glucose and counter-regulatory responses, which is primarily an Endocrine System topic.

Question 12

Which is the smallest gland in the human body?

Accepted Answer

Answer reason: Pineal gland The pineal is a very small endocrine organ located near the center of the brain and typically weighs only around 100–200 mg. By comparison, the pituitary is larger (roughly ~0.5 g), and the thyroid and adrenal glands are much larger and heavier. The pineal primarily secretes melatonin, helping regulate circadian rhythms.
Category reason: This question tests identification of an endocrine gland by relative size, which is foundational biomedical knowledge about the endocrine organs.

Question 13

Which gland is both endocrine and exocrine gland?

Accepted Answer

Answer reason: Pancreas It has dual functions: endocrine islets release hormones like insulin and glucagon directly into the bloodstream, while exocrine acinar cells secrete digestive enzymes through ducts into the duodenum. The pituitary is purely endocrine, and the liver is primarily an exocrine digestive organ (bile secretion) rather than a classic mixed endocrine-exocrine gland in this context. Therefore the option identifying the classic mixed gland is the best answer.
Category reason: This item tests identification of a gland with both hormone secretion to blood and enzyme secretion via ducts, a core concept in the Endocrine System.

Question 14

True or False: A patient recovering from a thyroidectomy is at high risk for hypoglycemia.?

Accepted Answer

Answer reason: False Thyroidectomy primarily affects thyroid hormone production and carries postoperative risks such as airway compromise from neck hematoma, hypocalcemia from inadvertent parathyroid removal/trauma (causing tetany), and recurrent laryngeal nerve injury. Hypoglycemia is not a typical direct risk of thyroid removal; it is more associated with insulin excess or impaired counter-regulation rather than thyroid surgery. While thyroid hormone can influence metabolism, postoperative monitoring is focused on respiratory status and calcium-related neuromuscular signs rather than blood glucose instability.
Category reason: This item tests endocrine physiology/pathophysiology related to thyroidectomy and expected postoperative metabolic complications, which fits Endocrine System foundational science rather than nursing process decision-making.

Question 15

Which hormone ratio is typically increased in PCOS?

Accepted Answer

Answer reason: LH/FSH PCOS is classically associated with increased LH pulse frequency and relatively lower/normal FSH, leading to an elevated LH:FSH ratio (often cited as >2:1, though not required for diagnosis). This hormonal pattern promotes theca cell androgen production and contributes to anovulation. The other ratios are related to thyroid function testing or prolactin regulation and are not the typical endocrine pattern described in PCOS.
Category reason: This question tests a characteristic hormonal pattern seen in a reproductive-endocrine disorder (PCOS), which fits best under the Endocrine System subject area.

Question 16

Low sugar in blood is called?

Accepted Answer

Answer reason: Hypoglycemia Low blood glucose is termed hypoglycemia, commonly defined clinically as a plasma glucose

Question 17

Which hormone is known as the "Love Hormone"?

Accepted Answer

Answer reason: C. Oxytocin Oxytocin is strongly associated with social bonding, attachment, and trust, and it is released during childbirth, breastfeeding, and intimate social interactions. These effects on pair-bonding and maternal-infant bonding are why it is popularly called the “love hormone.” Dopamine and serotonin are key neurotransmitters for reward and mood regulation, respectively, but they are not the classic “love hormone.” Adrenaline primarily mediates the acute stress (fight-or-flight) response rather than bonding.
Category reason: This question tests knowledge of a specific hormone and its physiologic role in bonding and reproduction-related behaviors, which is primarily an Endocrine System topic rather than a nursing care decision.

Question 18

Osteoporosis is caused due to deficiency of?

Accepted Answer

Answer reason: Vitamin D Vitamin D is essential for intestinal calcium (and phosphate) absorption and for maintaining normal mineralization of bone. Deficiency leads to impaired mineralization (classically osteomalacia in adults) and contributes to low bone density and increased fracture risk, which is commonly tested alongside osteoporosis in nursing/medical exams. Among the listed vitamins, it is the most directly linked to bone health via calcium homeostasis.
Category reason: This item tests foundational understanding of vitamin-related regulation of calcium and bone metabolism rather than a nursing intervention or prioritization decision, so it fits NursingScience. The most fitting subject is Endocrine System because vitamin D functions as a hormone-like regulator of calcium-phosphate balance affecting bone density.

Question 19

True or False A patient with a blood glucose level of 50 mg/dL is experiencing hyperglycemia.?

Accepted Answer

Answer reason: False A blood glucose of 50 mg/dL is below normal and indicates hypoglycemia, not hyperglycemia. Hyperglycemia refers to elevated blood glucose levels, typically >180 mg/dL postprandial or >126 mg/dL fasting (depending on criteria and context). Values this low can cause neuroglycopenic symptoms (confusion, seizure, loss of consciousness) and require prompt treatment with fast-acting carbohydrate or IV dextrose if severe.
Category reason: This item tests understanding of blood glucose physiology and the definitions of hypo- vs hyperglycemia, which are core concepts of endocrine regulation.

Question 20

Which hormone helps in childbirth by contracting the uterus?

Accepted Answer

Answer reason: Oxytocin It is released from the posterior pituitary and directly stimulates uterine smooth muscle to produce rhythmic contractions during labor. It also participates in a positive feedback loop where cervical stretch increases its release, strengthening contractions and aiding delivery. In contrast, prolactin primarily supports milk production, estrogen mainly prepares the uterus and increases receptor sensitivity, and testosterone is not a driver of parturition.
Category reason: This item tests knowledge of a hormone’s physiologic role in labor and uterine contractility, which is core endocrine regulation rather than nursing decision-making.

Question 21

Which organ is responsible for producing insulin in the human body?

Accepted Answer

Answer reason: B. Pancreas Insulin is synthesized and secreted by beta cells in the islets of Langerhans, which are located in the pancreas. This hormone lowers blood glucose by promoting cellular uptake of glucose and enhancing glycogen synthesis in liver and muscle. The liver is a major target organ for insulin but does not produce it; the kidney and gallbladder are not insulin-producing organs.
Category reason: This is a foundational question about which organ produces a specific hormone (insulin), which is core content in endocrine physiology rather than nursing care decision-making.

Question 22

Which symptom should a nurse expect in a client with hypoglycemia?

Accepted Answer

Answer reason: Hypoglycemia triggers a sympathetic (adrenergic) response causing sweating, tremor, palpitations, and anxiety, and it also produces neuroglycopenic signs such as confusion, irritability, and altered level of consciousness due to inadequate glucose delivery to the brain. In contrast, polyuria and dry mouth are classic for hyperglycemia from osmotic diuresis. Fruity breath and Kussmaul respirations suggest diabetic ketoacidosis, a hyperglycemic emergency.
Category reason: This question tests recognition of endocrine-related clinical manifestations distinguishing hypoglycemia from hyperglycemic states, which is core Endocrine System content rather than a nursing intervention/prioritization scenario.

Question 23

A woman with gestational diabetes is being educated about insulin needs. Which statement indicates understanding?

Accepted Answer

Answer reason: s." Placental hormones (e.g., human placental lactogen, cortisol, progesterone) create increasing insulin resistance as gestation advances, particularly in the second and third trimesters. As resistance rises, exogenous insulin requirements commonly increase to maintain euglycemia. Insulin is not routinely stopped at 36 weeks, and management is not limited to insulin alone because diet, exercise, and glucose monitoring are core components of treatment. Insulin needs do not typically decrease in the second trimester; they more often rise with progression of pregnancy.
Category reason: This tests physiologic changes in pregnancy that alter insulin sensitivity and insulin requirements, which is foundational endocrine/metabolic regulation rather than a nursing prioritization or intervention decision.

Question 24

Which clinical feature is most consistent with myxedema?

Accepted Answer

Answer reason: Myxedema is severe hypothyroidism, which slows metabolic processes and commonly causes fatigue, lethargy, and weight gain. Accumulation of glycosaminoglycans in the dermis leads to characteristic non-pitting edema and facial puffiness. The other options describe findings more consistent with hyperthyroidism (tachycardia, restlessness, insomnia, exophthalmos) or dehydration rather than myxedema.
Category reason: This question tests recognition of classic signs of hypothyroidism/myxedema, which is a foundational endocrine disorder rather than a nursing intervention/priority scenario.

Question 25

Which pregnant client is most at risk for gestational diabetes mellitus (GDM)?

Accepted Answer

Answer reason: PCOS is strongly associated with insulin resistance and impaired glucose tolerance, which increases the likelihood of developing hyperglycemia during pregnancy. Advanced maternal age (≥25–35 depending on guideline) further raises risk compared with younger clients. The other options describe situations without major GDM risk factors (normal BMI, no family history, and first pregnancy alone).
Category reason: This item tests understanding of metabolic/endocrine risk factors that predispose to gestational diabetes rather than nursing interventions or prioritization, so it best fits the Endocrine System.

Question 26

A nurse is reviewing lab values for a client with diabetes insipidus. Which value supports the diagnosis?

Accepted Answer

Answer reason: B. Urine specific gravity 1.002 Diabetes insipidus causes impaired ADH effect leading to inability to concentrate urine, producing large volumes of very dilute urine. A very low urine specific gravity (typically

Question 27

Which symptom would the nurse expect in a client with hypoglycemia?

Accepted Answer

Answer reason: These are adrenergic (sympathoadrenal) warning signs caused by epinephrine release when blood glucose drops. Patients often develop shakiness, anxiety/irritability, sweating, and palpitations early in hypoglycemia, which can progress to neuroglycopenic symptoms (confusion, seizures) if untreated. The other options reflect hyperglycemia/diabetic ketoacidosis findings such as fruity breath and Kussmaul respirations or dehydration with polydipsia.
Category reason: This question tests recognition of clinical manifestations of low blood glucose and counter-regulatory endocrine responses, which is core Endocrine System knowledge rather than a nursing management/prioritization decision.

Question 28

A client with hypoparathyroidism is being discharged. Which diet choice is most appropriate?

Accepted Answer

Answer reason: Hypoparathyroidism causes low parathyroid hormone levels, leading to hypocalcemia and hyperphosphatemia due to reduced renal phosphate excretion. Dietary teaching aims to support serum calcium levels while limiting phosphorus intake to reduce phosphate burden and help correct the calcium–phosphate imbalance. This aligns with typical discharge education alongside prescribed calcium and vitamin D therapy and monitoring for signs of hypocalcemia (e.g., tingling, tetany).
Category reason: This question tests endocrine hormone function (parathyroid hormone) and its effects on calcium/phosphate balance and dietary implications, which is core Endocrine System science content rather than a nursing judgment/prioritization scenario.

Question 29

Diabetes mellitus is diagnosed if fasting blood glucose is ≥?

Accepted Answer

Answer reason: A fasting plasma glucose of at least 126 mg/dL (7.0 mmol/L) on two separate occasions is a standard diagnostic criterion for diabetes mellitus. Values from 100–125 mg/dL fall into impaired fasting glucose (prediabetes) rather than diabetes. Higher cutoffs like 140 mg/dL are not used for fasting diagnosis; 140 mg/dL is more relevant to postprandial/OGTT thresholds for impaired glucose tolerance.
Category reason: This question tests the diagnostic cutoff for fasting blood glucose used to diagnose diabetes, which is a core concept of endocrine (glucose/insulin) regulation and disease criteria rather than a nursing intervention scenario.

Question 30

Which hormone is called the “pregnancy hormone”?

Accepted Answer

Answer reason: It maintains the endometrium and supports implantation and continuation of pregnancy by promoting a secretory uterine lining and reducing uterine contractility. Early in gestation it is produced mainly by the corpus luteum and later predominantly by the placenta. The other options are more associated with secondary sexual characteristics (estrogen), labor/milk letdown (oxytocin), or pelvic ligament/cervical softening (relaxin).
Category reason: This is a foundational question about reproductive hormone function and regulation, which is primarily studied within the Endocrine System rather than nursing care decision-making.

Question 31

Which client is most at risk for developing type 2 diabetes?

Accepted Answer

Answer reason: C. A 60-year-old with central obesity and hypertension Older age plus central (visceral) obesity strongly increases insulin resistance, a key mechanism leading to type 2 diabetes. Hypertension commonly clusters with abdominal obesity as part of metabolic syndrome, which markedly elevates diabetes risk. By contrast, normal BMI adolescence, being physically active, and endurance training are generally protective through improved insulin sensitivity and weight control.
Category reason: This question tests risk factors and pathophysiology related to type 2 diabetes development, which is primarily an endocrine disorder involving insulin resistance and glucose regulation.

Question 32

Which hormone imbalance is most likely in diabetes insipidus?

Accepted Answer

Answer reason: Diabetes insipidus is characterized by inability to concentrate urine, leading to large volumes of dilute urine and polydipsia, most commonly due to inadequate ADH effect. In central diabetes insipidus, the posterior pituitary does not secrete enough ADH. Without ADH-mediated water reabsorption in the renal collecting ducts, free water is lost, increasing serum osmolality and causing dehydration risk. The other options correspond to different disorders (SIADH for excess ADH, Cushing syndrome for excess cortisol, and diabetes mellitus for insulin deficiency).
Category reason: This question tests understanding of a hormone deficiency causing a classic endocrine disorder rather than nursing actions or prioritization, so it fits the Endocrine System in NursingScience.

Question 33

A client with insulin-dependent diabetes in pregnancy has a blood glucose level of 45 mg/dL. Which symptom is expected?

Accepted Answer

Answer reason: A glucose of 45 mg/dL indicates hypoglycemia, which triggers an adrenergic (sympathoadrenal) response. Typical early findings include diaphoresis, tremor, palpitations, and anxiety. By contrast, increased thirst and polyuria are more consistent with hyperglycemia, and dry mouth is commonly associated with dehydration from elevated glucose rather than low glucose.
Category reason: This question tests recognition of signs and symptoms associated with low blood glucose and the body’s hormonal counter-regulatory response, which is core endocrine physiology.

Question 34

Neonatal Hypoglycemia Signs Which sign in a newborn suggests hypoglycemia?

Accepted Answer

Answer reason: Neonatal hypoglycemia commonly presents with neuroglycopenic and adrenergic signs such as jitteriness/tremors, lethargy, poor feeding, temperature instability, and sometimes seizures. These findings reflect inadequate glucose delivery to the brain and compensatory catecholamine release. The other options are less characteristic: a high-pitched cry is more associated with neurologic insult or withdrawal, pink/warm skin is reassuring, and bradycardia/hypotension are late, nonspecific signs of decompensation rather than typical early hypoglycemia indicators.
Category reason: This question tests recognition of clinical manifestations of altered glucose regulation in a newborn, which is primarily an endocrine/metabolic physiology concept rather than a nursing intervention or prioritization task.

Question 35

Which of the following is a common sign of hypoglycemia?

Accepted Answer

Answer reason: Hypoglycemia triggers a sympathoadrenal response (epinephrine release) that produces adrenergic symptoms such as diaphoresis, tremor, palpitations, and anxiety. These warning signs often occur before neuroglycopenic symptoms like confusion or seizures. In contrast, polydipsia and polyuria are classic features of hyperglycemia due to osmotic diuresis, and weight gain is not a typical acute manifestation of low blood glucose.
Category reason: This tests recognition of physiologic signs caused by low blood glucose and counter-regulatory hormone responses, which is core endocrine system knowledge rather than a nursing intervention/prioritization task.

Question 36

Which hormone regulates the body's water balance by controlling the amount of water reabsorbed by the kidneys?

Accepted Answer

Answer reason: It is also known as antidiuretic hormone (ADH) and increases water reabsorption in the kidney collecting ducts by promoting aquaporin insertion, concentrating urine and conserving body water. When levels are low or the kidneys are unresponsive, excess free water is lost (e.g., diabetes insipidus). The other options primarily regulate uterine contraction/milk letdown, sympathetic “fight-or-flight” responses, or glucose metabolism rather than renal water reabsorption.
Category reason: This is a foundational physiology/endocrinology question about hormonal regulation of renal water handling, which fits the Endocrine System rather than a nursing-intervention scenario.

Question 37

Milk secretion is controlled by?

Accepted Answer

Answer reason: It is the primary anterior pituitary hormone responsible for stimulating milk production in the mammary glands after childbirth. Suckling triggers neuroendocrine signaling that increases its release, promoting lactogenesis and ongoing milk synthesis. In contrast, oxytocin mediates milk ejection (let-down), not production, and the other listed hormones are not the main regulators of lactation.
Category reason: This is a hormone-regulation question focused on control of lactation, which is best categorized under the Endocrine System.

Question 38

Which hormone is an emergency hormone?

Accepted Answer

Answer reason: It is rapidly released from the adrenal medulla during acute stress (“fight-or-flight”), producing immediate cardiovascular and metabolic effects such as increased heart rate, bronchodilation, and mobilization of glucose. These fast, short-term actions help the body respond to emergencies. The other listed hormones mainly regulate longer-term metabolism (thyroxine) or routine glucose homeostasis (insulin, glucagon) rather than acute emergency responses.
Category reason: This is a foundational question about hormone function and acute stress physiology, which is primarily studied under the Endocrine System rather than nursing interventions or prioritization.

Question 39

What hormone triggers the start of puberty in both boys and girls?

Accepted Answer

Answer reason: Puberty begins with increased pulsatile release from the hypothalamus, which stimulates the anterior pituitary to secrete LH and FSH. These gonadotropins then act on the gonads to increase sex steroid production (estrogen in girls and testosterone in boys) and gametogenesis. Estrogen and testosterone are downstream mediators of pubertal changes rather than the initiating signal. FSH is also downstream of hypothalamic activation and does not initiate the central onset of puberty by itself.
Category reason: This question tests the hormonal control of pubertal onset via the hypothalamic-pituitary-gonadal axis, which is a core topic of endocrine regulation rather than a nursing care decision.

Question 40

Which hormone is responsible for male puberty?

Accepted Answer

Answer reason: Puberty in males is driven by activation of the hypothalamic-pituitary-gonadal axis, leading to increased LH stimulation of Leydig cells and rising androgen production. This androgen surge produces secondary sex characteristics such as voice deepening, increased muscle mass, facial/body hair growth, and genital maturation. Estrogen and progesterone are primarily associated with female reproductive physiology, and insulin regulates glucose metabolism rather than pubertal sexual development.
Category reason: This tests foundational hormone physiology and sexual maturation mechanisms, which are core endocrine concepts rather than a nursing care decision.

Question 41

Which hormone regulates blood sugar level?

Accepted Answer

Answer reason: It is the primary hormone responsible for lowering plasma glucose by promoting cellular glucose uptake (especially in muscle and adipose tissue) and stimulating glycogen synthesis in the liver. It also suppresses hepatic gluconeogenesis and glycogenolysis, helping maintain euglycemia between meals. The other listed hormones may influence metabolism or stress responses, but they are not the main regulator of blood glucose homeostasis.
Category reason: This is a foundational question about hormonal control of blood glucose, which is a core topic within endocrine physiology rather than a nursing care decision.

Question 42

Which of the following is not a feature of diabetes mellitus (dm)?

Accepted Answer

Answer reason: Diabetes mellitus is characterized by hyperglycemia due to impaired insulin secretion and/or action, so elevated plasma glucose is a core feature. Diabetic ketoacidosis is a well-known acute complication, especially in type 1 diabetes, resulting from insulin deficiency and increased ketone production. Hypoglycemic coma is not a direct feature of untreated diabetes itself; it is typically a complication of diabetes treatment (e.g., insulin or sulfonylureas) causing dangerously low blood glucose.
Category reason: This question tests core disease features and complications of diabetes mellitus, focusing on endocrine pathophysiology rather than nursing interventions or prioritization.

Question 43

Insulin secreted by which cells?

Accepted Answer

Answer reason: Insulin is produced by the pancreatic islet β-cells in the islets of Langerhans and released in response to elevated blood glucose. It promotes cellular glucose uptake (especially in muscle and adipose), stimulates glycogen synthesis, and suppresses hepatic gluconeogenesis to lower plasma glucose. By contrast, α-cells secrete glucagon, δ-cells secrete somatostatin, and PP (gamma) cells secrete pancreatic polypeptide.
Category reason: This is a foundational question about which pancreatic islet cell type secretes a specific hormone, which is core endocrine physiology.

Question 44

Melatonin is hormone produced by ?

Accepted Answer

Answer reason: Melatonin is synthesized primarily by pinealocytes in the pineal gland and secreted in a circadian pattern that increases in darkness. Its release is regulated by the suprachiasmatic nucleus via sympathetic signaling, helping coordinate sleep–wake timing. The adrenal gland mainly produces corticosteroids and catecholamines, the thymus produces thymic hormones involved in T-cell maturation, and the pituitary produces multiple tropic hormones but not melatonin.
Category reason: This question tests knowledge of which endocrine organ produces a specific hormone (melatonin), which is foundational endocrine physiology rather than a nursing care decision.

Question 45

What is the plasma glucose level typically used to define hypoglycemia in adults?

Accepted Answer

Answer reason: This is the commonly used clinical threshold for defining hypoglycemia in adults and is the level at which counter-regulatory hormone responses typically begin. It is also the value used in many diabetes care standards as an “alert” level prompting treatment to prevent progression. Lower values (e.g.,

Question 46

Diabetic insipidus is caused by the deficiency of?

Accepted Answer

Answer reason: ADH (vasopressin) normally promotes water reabsorption in the kidney collecting ducts, concentrating urine. Deficiency of ADH (central diabetes insipidus) or inability of the kidneys to respond to it leads to excretion of large volumes of dilute urine with polydipsia and risk of dehydration/hypernatremia. Insulin deficiency causes diabetes mellitus, not diabetes insipidus. Glycogen and renin are not the primary hormones responsible for this disorder.
Category reason: This question tests the hormonal cause of diabetes insipidus (ADH/vasopressin) and its role in water balance, which is core endocrine physiology/pathophysiology rather than a nursing intervention scenario.

Question 47

What is the primary function of insulin in the human body?

Accepted Answer

Answer reason: Insulin is a pancreatic hormone that decreases plasma glucose by promoting glucose uptake into insulin-sensitive tissues (especially muscle and adipose) and by suppressing hepatic glucose output (gluconeogenesis and glycogenolysis). It also supports storage of energy by increasing glycogen and fat synthesis. The other options describe functions of other physiologic systems (blood pressure regulation, digestion) or another hormone (erythropoietin for red cell production).
Category reason: This question tests the core physiologic role of an endocrine hormone (insulin) in regulating blood glucose homeostasis, which is primarily Endocrine System content rather than a nursing intervention/priority question.

Question 48

Which of the following is a first-line drug for Graves’ disease?

Accepted Answer

Answer reason: Graves’ disease is an autoimmune cause of hyperthyroidism, and thionamides are used as first-line antithyroid therapy to reduce new thyroid hormone synthesis by inhibiting thyroid peroxidase. Among thionamides, methimazole is generally preferred due to once-daily dosing and lower risk of severe hepatotoxicity compared with propylthiouracil (except in the first trimester of pregnancy or thyroid storm). Levothyroxine treats hypothyroidism, hydrocortisone is an adjunct in thyroid storm and severe ophthalmopathy but not primary first-line therapy, and amiodarone can induce thyroid dysfunction rather than treat Graves’ hyperthyroidism.
Category reason: This question tests pharmacologic management of hyperthyroidism due to Graves’ disease, which is a core topic within endocrine disorders and their drug therapy.

Question 49

Which Hormone is Involved in the Regulation of Water balance in the Body?

Accepted Answer

Answer reason: ADH (vasopressin) is released from the posterior pituitary in response to increased plasma osmolality or decreased circulating volume. It acts mainly on V2 receptors in the renal collecting ducts to increase aquaporin insertion, increasing water reabsorption and concentrating urine. This helps maintain serum osmolality and intravascular volume. The other listed hormones have primary roles in stress response, labor/milk letdown, or metabolism rather than direct water reabsorption control.
Category reason: This question tests knowledge of a hormone’s physiologic role in maintaining body water balance, which is a core topic within endocrine regulation.

Question 50

Medical Knowledge HbA1c level diagnostic For diabetes is??

Accepted Answer

Answer reason: Diagnosis of diabetes by HbA1c is based on a chronic hyperglycemia threshold, with the accepted diagnostic cutoff being ≥6.5%. Among the provided options, none matches the true diagnostic value, so the best available choice is the smallest value that is still clearly above the diagnostic threshold. Values like 7.5% represent uncontrolled diabetes rather than the minimum diagnostic criterion, but they still indicate diabetes is present. Therefore, this is the most correct option within the constraints of the listed answers.
Category reason: This item tests a laboratory diagnostic cutoff (HbA1c) used in diabetes, which is an endocrine/metabolic biomedical concept rather than a nursing intervention or prioritization task.

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