Renal & Urinary System Practice Test 1
Renal & Urinary System NCLEX Practice Test
Renal & Urinary System, within the NCLEX test plan under Nursing Science → Clinical Foundations, reflects the core knowledge domains and conceptual competencies directly related to what the exam evaluates. The targeted number of questions is 50; designed with realistic clinical scenarios and conceptual variety to help you identify both your strengths and improvement areas.
This test is the 1st part of the Renal & Urinary System section. To explore all practice tests under this topic, use the “Back to Main Topic” button at the end of the page.
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In the Renal & Urinary System Study Cards section, shared by real NCLEX candidates, you’ll find concise summaries and high-yield insights related to the most tested concepts. It’s a perfect space to reinforce challenging topics and sharpen your recall through quick, focused repetitions. Short, powerful, and repeatable!
Renal & Urinary System Practice Test 1
The average pH of Urine is?
- 7.0
- 6.0
- 8.0
- 0.0
Explanation: Answer reason: Normal urine is slightly acidic due to metabolic waste products, with a typical average pH around 6. This acidity helps inhibit bacterial growth and reflects normal renal regulation of acid–base balance.
Kidney is composed of about millions of functional units?
- 1-4 million nephron
- 1-3 million nephron
- 1-2 million nephron
- 1-1 million nephron
Explanation: Answer reason: Each kidney contains approximately 1 million nephrons, the functional filtration units. Together, both kidneys typically contain 2–3 million nephrons, with normal physiologic variation around this range.
Filtrate are formed each day by two kidneys?
- 200 Litres
- 150 Litres
- 100 Litres
- 140 Litres
- 180 litres
Explanation: Answer reason: Normal GFR is about 120–125 mL/min; over 24 hours, this equals roughly 180 liters of glomerular filtrate produced by both kidneys.
Ureters are layers?
- 4 Layers
- 2 Layers
- 3 Layers
- 5 Layers
Explanation: Answer reason: The ureteral wall has three tunics: mucosa (transitional epithelium with lamina propria), muscularis, and an outer adventitia.
You're collecting a urine sample from a patient who is experiencing proteinuria due to nephrotic syndrome. As the nurse, you know the urine will appear?
- Tea-colored
- Orange and frothy.
- Dark and foamy.
- Straw-colored
Explanation: Answer reason: Proteinuria reduces surface tension and commonly produces persistent foam/bubbles; urine may also appear darker.
Haematuria means ______?
- RBCs in the urine.
- WBCs in the urine
- Fats in the urine
- Urea in urine
Explanation: Answer reason: Hematuria is the presence of blood in the urine, i.e., red blood cells in the urine.
Which of the following organs is one of the primary regulators of body fluid and electrolyte balance?
- Stomach
- Intestine
- Kidney
- Lungs
Explanation: Answer reason: The kidneys are the primary organs regulating body fluid volume and electrolyte balance through filtration, reabsorption, secretion, and RAAS-mediated control. The stomach and intestine aid digestion and absorption, and the lungs primarily regulate acid–base balance via CO2.
______ is slightly lower than the left one?
- Left kidney
- Right kidney
- Both are equal.
- None of these
Explanation: Answer reason: The right kidney lies slightly lower than the left because the large right lobe of the liver displaces it downward.
Blood dialysis is also called what?
- Artificial Lung
- Artificial Kidney
- Artificial Heart
- Artificial Brain
Explanation: Answer reason: Hemodialysis performs filtration and waste removal like the kidneys; the machine is commonly called an artificial kidney.
What is the muscular tube that extends from the kidney to the posterior surface of the bladder?
- Epididymis
- Seminal vesicles
- Ureter
- Urinary bladder
- Uterine tubes
Explanation: Answer reason: The ureter is a muscular tube that carries urine from the renal pelvis of each kidney to the urinary bladder, entering it on its posterior surface.
Electrolyte balance is regulated by?
- Heart
- Kidney
- Liver
- Brain
Explanation: Answer reason: Kidneys maintain electrolyte homeostasis through filtration, reabsorption, secretion, and hormonal control (e.g., aldosterone).
Which organ is primarily responsible for the excretion of waste products?
- Liver
- Heart
- Anus
- Kidney
Explanation: Answer reason: The kidneys filter the blood to remove metabolic wastes and excess water, forming urine—making them the primary excretory organs.
What is the total filtrate formed in 24 hours by the human kidney?
- 180 litres
- 8.0 litre
- 1.8 litres
- 18 litres
Explanation: Answer reason: Normal GFR is about 125 mL/min. Over 24 hours, this equals roughly 180 L of filtrate formed by both kidneys.
Common symptoms seen in glomerulonephritis include all of the following except?
- Hematuria
- Decreased GFR.
- Fatigue
- Elevated LFTs
Explanation: Answer reason: Glomerulonephritis typically presents with hematuria, decreased GFR, and systemic symptoms such as fatigue. Elevated liver function tests are not characteristic of this renal disorder.
Which of the following best describes the structure that collects urine in the body?
- Bladder
- Kidney
- Ureter
- Urethra
- Urethral meatus
Explanation: Answer reason: The urinary bladder serves as the reservoir that collects and stores urine before excretion.
The area of the mucous membrane covering the internal surface of the base of the bladder is called?
- Apex
- Base
- Detrusor muscle
- Mucosal layer
- Trigone
Explanation: Answer reason: The trigone is the smooth, triangular area of mucosa on the internal base of the urinary bladder between the ureteric orifices and the internal urethral orifice. Other options refer to general regions or to different tissue layers.
What is the normal pH range of urine?
- 3.5
- 3.9
- 5.0
- 7.0
Explanation: Answer reason: Urine is typically slightly acidic, with an average around pH 6 and a normal range of about 4.5–8.0. Among the options, 5.0 best represents the normal acidic range.
The neck of the bladder lies inferiorly and rests on the upper surface of what?
- Thyroid
- Pituitary
- Pineal
- Thymus
- Prostate
Explanation: Answer reason: In males, the bladder neck sits directly above and rests on the superior surface of the prostate gland. The other options are endocrine organs located in the neck, brain, or mediastinum and are not anatomically related to the bladder.
The cup-shaped part of the nephron is called?
- Glomerular capsule
- Bowman's capsule
- Both A and B
- None of these
Explanation: Answer reason: The cup-shaped sac at the beginning of the nephron that encloses the glomerular capillaries is Bowman's (glomerular) capsule.
The normal glomerular filtration rate (GFR) in a healthy young adult is approximately?
- 115 mL/minute
- 130 ml/minute
- 125 mL/minute
- None of these.
Explanation: Answer reason: Normal GFR in a healthy young adult is approximately 120–125 mL/min, so 125 mL/minute is the best answer. Clinical eGFR interpretation often uses 90 mL/min/1.73 m² or higher as normal, but that is a category threshold rather than the classic approximate physiologic value.
Ureters are long?
- About 20 to 30 cm.
- About 25 to 30 cm.
- About 35 cm
- None of these.
Explanation: Answer reason: Adult ureters measure approximately 25–30 cm from the renal pelvis to the bladder.
Which of the following is not a typical symptom of kidney failure?
- Insomnia
- Nausea
- Hallucinations
- Itching
Explanation: Answer reason: Nausea and pruritus are classic uremic symptoms, and sleep disturbances such as insomnia are common in CKD. Hallucinations are not typical and occur only with severe uremic encephalopathy, so they are the least characteristic.
Hemodialysis means the cleaning of __________?
- Urine
- Blood
- Glomerular
- Coelomic fluid
Explanation: Answer reason: Hemodialysis is a renal replacement therapy that filters waste and excess fluid from the bloodstream using a dialyzer; it cleans the blood.
Urine is continuously formed by the ______?
- Spleen
- Liver
- Kidney
- None of the above
Explanation: Answer reason: Urine is continuously produced by the kidneys through filtration and tubular processing.
What is nocturia?
- Urinary frequency
- Urination at night
- Poor urine output.
- No passage of urine.
Explanation: Answer reason: Nocturia specifically refers to waking at night to urinate.
Which organ can be considered a blood filter?
- Heart
- Kidney
- Liver
- Lungs
Explanation: Answer reason: The kidneys filter the blood via glomerular filtration, removing wastes and regulating fluid-electrolyte balance.
The length of the female urethra is?
- 1 cm
- 2 cm
- 3 cm
- 4 cm
Explanation: Answer reason: The female urethra is short, approximately 3–4 cm; the standard reference length is about 4 cm.
The nurse caring for a client in shock recognizes that the kidneys' glomerular filtration rate will fall if the client's mean arterial pressure falls below?
- 140
- 120
- 100
- 80
Explanation: Answer reason: Renal autoregulation maintains renal blood flow and GFR over a MAP range of about 80–180 mmHg. When MAP drops below ~80 mmHg, filtration pressure declines and GFR falls.
A patient has dark, foamy urine, edema in their extremities, bad breath, and a GFR of 22. What stage of renal disease do they have?
- Stage 2
- Stage 3
- Stage 4
- Stage 5
Explanation: Answer reason: CKD staging by GFR: Stage 2 (60–89), Stage 3 (30–59), Stage 4 (15–29), Stage 5 (<15). A GFR of 22 mL/min/1.73 m² corresponds to Stage 4.
Who treats kidney problems?
- Urologist
- Cardiologist
- Pathologist
- Nephrologist
Explanation: Answer reason: A nephrologist specializes in diagnosing and medically managing diseases of the kidneys.
Is the kidney divided into three layers except one?
- Renal Medulla
- renal cortex
- Renal Pelvis
- Renal Hilum
Explanation: Answer reason: The kidney’s internal regions are the renal cortex, renal medulla, and renal pelvis. The renal hilum is an entry/exit indentation for vessels and the ureter, not a layer.
Is the female urethra only ... inches long and 6 mm in diameter?
- 1 inch
- 1.5 inches
- 2 inches
- 2.5 inches
Explanation: Answer reason: The female urethra averages about 4 cm in length (~1.5 inches) and roughly 6 mm in diameter.
The functional unit of the kidney is?
- Medulla
- Calyces
- Nephrons
- Hilum
Explanation: Answer reason: The nephron is the kidney’s functional unit responsible for filtration, reabsorption, secretion, and urine formation. Medulla, calyces, and hilum are anatomical regions, not the functional unit.
Which is not an organ of the urinary system?
- Kidney
- Urethra
- Ureter
- Prostate
Explanation: Answer reason: Kidneys, ureters, and urethra are parts of the urinary system. The prostate is a male reproductive gland and not a urinary organ.
Cystitis is the inflammation of what?
- Gallbladder
- Urinary bladder
- Cyst
- Liver
Explanation: Answer reason: Cystitis literally means inflammation (-itis) of the bladder (cyst-), specifically the urinary bladder.
Length of the female urethra?
- 11 cm
- 18 cm
- 4 cm
- 9 cm
Explanation: Answer reason: The adult female urethra measures about 3–4 cm in length; thus 4 cm is correct.
The total filtrate formed in 24 hours in the human kidney is?
- 180 litres
- 8.0 litres
- 1.8 litres
- 18 litres
Explanation: Answer reason: Daily glomerular filtration in adults is about 180 L; most is reabsorbed, leaving ~1–2 L urine.
Triad of symptoms in nephrotic syndrome includes all except?
- Proteinuria
- Hypoalbuminemia
- Edema
- Weight loss
Explanation: Answer reason: The classic nephrotic triad is heavy proteinuria, hypoalbuminemia, and edema. Weight loss is not part of this triad; patients often have weight gain due to fluid retention.
A nurse interviews the parents of a child recently diagnosed with glomerulonephritis. The nurse understands which information collected during the assessment is most often associated with the diagnosis of glomerulonephritis?
- Streptococcal throat infection two weeks prior to diagnosis.
- A child fell off a bike onto the handlebars.
- Nausea and vomiting for the last 24 hours.
- Urticaria and itching for one week prior to diagnosis.
Explanation: Answer reason: Post-streptococcal glomerulonephritis commonly follows a group A streptococcal throat infection by 1–3 weeks. Trauma, acute GI upset, or allergic symptoms are not typical antecedents.
Which patient below is at MOST RISK for developing acute glomerulonephritis?
- A 3 year old male who has a positive ASO titer.
- A 5 year old male who is recovering form an appendectomy.
- An 18 year old male who is diagnosed with HIV.
- A 6 year old female newly diagnosed with measles.
Explanation: Answer reason: A positive antistreptolysin O titer indicates recent group A streptococcal infection, the classic antecedent to post‑streptococcal acute glomerulonephritis in children. The other scenarios are not typical risk factors.
Which patient below is NOT at risk for developing nephrotic syndrome?
- An 8 year old male with diabetes mellitus.
- A 5 year old female diagnosed with minimal change disease.
- A 10 year old male with Lupus.
- A 7 year old male recently diagnosed with Goodpasture's Syndrome.
Explanation: Answer reason: Goodpasture's syndrome causes a nephritic, rapidly progressive glomerulonephritis (anti-GBM), not a nephrotic syndrome. Diabetes mellitus, minimal change disease, and lupus are classic causes/risk factors for nephrotic syndrome.
A child come to hospital with complaints characterized by heavy proteinuria, Hypoalbuminemia and edema?
- Nephrotic syndrome
- Urinary tract infection
- Acute glomerulonephritis
- Renal failure
Explanation: Answer reason: The triad of heavy proteinuria, hypoalbuminemia, and edema is classic for nephrotic syndrome; nephritic syndrome features hematuria and mild proteinuria, while UTI and renal failure do not present with this specific triad.
Risk factor for nephrotic syndrome is............?
- Amyloidosis
- Diabetes mellitus
- Glomerulonephritis
- All of the above
Explanation: Answer reason: Amyloidosis, diabetic nephropathy, and various glomerulonephritides are recognized causes/predisposing conditions for nephrotic-range proteinuria; therefore all listed are risk factors.
A teen patient is admitted to the hospital by his physician who suspects a diagnosis of acute glomerulonephritis. Which of the following findings is not consistent with this diagnosis?
- Urine specific gravity of 1.040
- Urine output of 350 ml in 24 hours
- Brown ("tea-colored") urine
- Generalized edema
Explanation: Answer reason: Acute glomerulonephritis typically presents with oliguria, tea-colored hematuric urine, and increased urine specific gravity from concentrated urine. Generalized edema is more characteristic of nephrotic syndrome; AGN usually has periorbital/mild edema, not generalized.
A inflammation of the tiny filters in glomeruli, that leads removing excess fluid, electrolytes and waste from your bloodstream and pass them into your urine possibly due to?
- Nephrotic syndrome
- Glomerulonephritis
- Multiple myeloma
- Non of the above
Explanation: Answer reason: Inflammation of the glomeruli is termed glomerulonephritis. Nephrotic syndrome is a clinical syndrome and multiple myeloma is a malignancy, not the primary inflammation of glomeruli.
In nephrotic syndrome which infection is more common in children?
- UTI
- Cellulitis
- Pneumonia
- Bacterial peritonitis
Explanation: Answer reason: Children with nephrotic syndrome are particularly prone to spontaneous bacterial peritonitis, commonly due to Streptococcus pneumoniae, because of ascites and loss of immunoglobulins in urine.
The blood vessel leading away the glomerulus is known as-?
- Afferent
- Efferent
- Glomerular arteriole
- Motor artery
Explanation: Answer reason: In renal physiology, the afferent arteriole brings blood to the glomerulus and the efferent arteriole carries blood away from it.
The area of mucous membrane covering the internal surface of the base of the bladder is called?
- Apex
- Base
- Detrusor muscle
- Mucosal layer
- Trigone
Explanation: Answer reason: The smooth triangular mucosal area on the internal base of the bladder, bounded by the ureteric orifices and the internal urethral orifice, is the trigone.
Nephrosis is the disease of ......?
- Kidney
- Nerve
Explanation: Answer reason: Nephrosis refers to degenerative kidney disease (e.g., nephrotic syndrome). The root "nephr-" denotes kidney.
Mr. A admitted in ward C with the complaint of acute renal failure, his urine output is less than 400 ml/day, increased BUN, Phos, K. He is in which of the following stage?
- Diuretic
- Oliguric
- Prerenal
- Recovery
Explanation: Answer reason: Urine output <400 mL/day with elevated BUN, phosphate, and potassium characterizes the oliguric phase of acute kidney injury.
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