Question 1

Arthritis affects which part of your body?

Accepted Answer

Answer reason: Arthritis is inflammation of one or more joints, leading to joint pain, swelling, stiffness, and reduced range of motion. The core pathology involves synovium, cartilage, bone, and periarticular tissues, making the musculoskeletal system the primary site affected. While systemic symptoms can occur in some inflammatory arthritides, the defining and most directly affected structures are the joints.

Question 2

Strongest muscle in human body is ...?

Accepted Answer

Answer reason: In common anatomy/physiology teaching, the jaw muscle (masseter) is often cited as the strongest muscle based on its ability to generate high bite force. Arm and thigh muscles are large and powerful, but they are not typically referenced as the single “strongest” in terms of force output at the bite. Therefore, among the provided choices, “Jaw muscle” is the best answer.

Question 3

Shoulder joint is -?

Accepted Answer

Answer reason: The glenohumeral (shoulder) joint is a synovial ball-and-socket joint formed by the head of the humerus articulating with the glenoid fossa of the scapula. This structure permits multiaxial motion, including flexion/extension, abduction/adduction, and internal/external rotation. Hinge joints allow primarily flexion-extension, pivot joints allow rotation around a single axis, and fibrous joints are largely immovable.

Question 4

Ponseti’s Technique is used for correction of following paediatric musculoskeletal deformity ?

Accepted Answer

Answer reason: Ponseti technique is the standard nonoperative management for congenital talipes equinovarus (CTEV/clubfoot), using serial manipulation and casting, often followed by percutaneous Achilles tenotomy and bracing. It is not the corrective technique for developmental dysplasia of the hip (DDH), which is commonly managed initially with a Pavlik harness. Congenital coxa vara and metatarsus adductus have different evaluation and treatment approaches and are not primarily corrected with the Ponseti method.

Question 5

A Condition in which bones become Weak and Break easily is called?

Accepted Answer

Answer reason: Osteoporosis is characterized by decreased bone mineral density and deterioration of bone microarchitecture, leading to fragile bones that fracture easily (often with minimal trauma). Rickets causes defective mineralization in growing children, leading to soft bones and deformities rather than classic fragility fractures in adults. Arthritis is joint inflammation/degeneration, and acne is a skin condition, neither of which primarily causes bones to break easily.

Question 6

Which system includes bones and joints?

Accepted Answer

Answer reason: Bones and joints are core components of the skeletal system, which provides structural support, protection of organs, and leverage for movement. Joints are the articulation points where bones meet and allow varying degrees of motion. The nervous system coordinates signals, the muscular system generates force, and the digestive system processes nutrients, but none primarily consist of bones and joints.

Question 7

In a muscle cell the I band have midline called?

Accepted Answer

Answer reason: The I band contains thin (actin) filaments only and is bisected by the Z line (Z disc). The Z line forms the boundary between adjacent sarcomeres and appears as the midline within the I band. In contrast, the M line is at the center of the A band, and the H zone is the central region of the A band where only thick filaments are present. Sarcolemma refers to the muscle cell membrane, not a sarcomere landmark.

Question 8

The hollow bones of birds are called?

Accepted Answer

Answer reason: Birds have air-filled (hollow) bones that connect with the respiratory air-sac system; these are termed pneumatic bones. This adaptation reduces skeletal weight while maintaining structural strength, facilitating efficient flight. The other options are nonspecific descriptors or unrelated classifications and are not the anatomical term for hollow avian bones.

Question 9

Which organ system works with the skeletal system for movement?

Accepted Answer

Answer reason: Body movement is produced when skeletal muscles contract and pull on bones across joints, using tendons as attachments. The skeletal system provides the rigid framework and levers, while the muscular system generates the force for motion. The nervous system coordinates contraction, but the primary system that works directly with bones to create movement is the muscular system.

Question 10

The rotator cuff is composed of how many muscles?

Accepted Answer

Answer reason: The rotator cuff consists of four muscles that stabilize the glenohumeral (shoulder) joint and aid shoulder rotation and abduction. These are the SITS muscles: supraspinatus, infraspinatus, teres minor, and subscapularis. Therefore, the correct number of rotator cuff muscles is 4.

Question 11

Which of the following is a primary risk factor for osteoporosis?

Accepted Answer

Answer reason: A sedentary lifestyle is a major modifiable risk factor for osteoporosis because reduced weight-bearing and resistance activity decreases osteoblastic stimulation and accelerates bone loss. In contrast, high calcium intake is protective rather than a risk factor. Obesity is generally not a primary risk factor for osteoporosis (low body weight is more typical). Male gender is associated with lower osteoporosis risk compared with postmenopausal female sex.

Question 12

The intervertebral discs are made of?

Accepted Answer

Answer reason: Intervertebral discs are composed primarily of fibrocartilage, with an outer annulus fibrosus of fibrocartilage and an inner nucleus pulposus that is gelatinous. This fibrocartilaginous structure provides shock absorption and allows limited movement between vertebrae. They are not made of bone, and tendons attach muscle to bone while ligaments connect bone to bone rather than forming the disc itself.

Question 13

What type of joint is the shoulder?

Accepted Answer

Answer reason: The shoulder (glenohumeral) joint is a ball-and-socket synovial joint formed by the humeral head articulating with the glenoid fossa of the scapula. This structure allows the greatest range of motion of any major joint, including flexion/extension, abduction/adduction, and internal/external rotation. Hinge joints primarily allow flexion/extension (e.g., elbow), pivot joints allow rotation around an axis (e.g., atlantoaxial), and gliding joints allow sliding motions (e.g., intercarpal).

Question 14

Calcium is found in which part of Human body?

Accepted Answer

Answer reason: The vast majority of the body's calcium (~99%) is stored in bones and teeth as hydroxyapatite, providing structural strength and serving as a calcium reservoir. Only a small fraction circulates in blood and is present within cells to support neuromuscular function and signaling. Therefore, among the options given, bones are the primary site where calcium is found.

Question 15

Which of the following is considered a synovial joint?

Accepted Answer

Answer reason: Synovial joints are freely movable (diarthroses) and include a joint capsule, synovial membrane, and synovial fluid. The shoulder (glenohumeral) joint is a classic synovial ball-and-socket joint. In contrast, vertebral bodies and the pubic symphysis are cartilaginous (symphyses), and most skull joints are fibrous sutures with minimal movement.

Question 16

SCENARIO: A client who had a distal humerus fracture 8 weeks ago has been referred to OT one day after removal of a long arm cast. Evaluation results indicate the client has full functional ROM and normal sensation and skin pallor of the hand. The client rates the pain as a 3/10 using a visual analog scale. Elbow goniometric measurements show the client’s passive elbow ROM is significantly less than the norms. What should an OTR conclude is the PRIMARY cause for this discrepancy?

Accepted Answer

Answer reason: After prolonged immobilization in a long arm cast, the most common primary reason for reduced passive ROM is capsular/soft tissue contracture and muscle-tendon tightness. The scenario shows normal sensation and skin pallor with only mild pain, which makes secondary nerve injury or post-traumatic ischemia unlikely. Heterotopic ossification can limit ROM, but it typically presents with increasing pain, swelling/warmth, and progressive loss of motion rather than an expected early post-cast stiffness pattern. Therefore, soft tissue tightness best explains markedly reduced passive elbow ROM one day after cast removal.

Question 17

What do these finding indicate?

Accepted Answer

Answer reason: These findings are most consistent with a central slip extensor tendon injury (classically leading to a Boutonnière deformity pattern). Rupture of the central slip at the PIP joint prevents active PIP extension while allowing the lateral bands to migrate volarly, producing PIP flexion with relative DIP hyperextension. Flexor digitorum superficialis rupture would primarily impair PIP flexion, not extension. MCP dorsal subluxation or isolated lateral slip lengthening does not best explain the characteristic PIP extension deficit seen with central slip rupture.

Question 18

SCENARIO: An inpatient sustained an incomplete cervical spinal cord injury 2 months ago. The patient’s upper extremity functional strength is Trace (1/5) on the left and Poor Minus (2-/5) on the right. The patient’s goal is to eat meals independently. Which factor MUST be considered when determining if this patient is a candidate for a mobile arm support?

Accepted Answer

Answer reason: A mobile arm support assists active movement by counterbalancing gravity, but it cannot overcome limitations from joint contractures or restricted range of motion. Adequate passive joint mobility is required so the limb can be positioned through the feeding-related motion arc (shoulder/elbow/wrist) without pain or mechanical blockage. Setup time and wheelchair type affect convenience/fit, and athetoid movements may affect control, but neither is as fundamental as having sufficient passive ROM for the device to be usable.

Question 19

What type of exercise should be included as part of the client’s home program and would be MOST EFFECTIVE for facilitating lengthening of the oblique retinacular ligaments and promoting glide of the lateral bands?

Accepted Answer

Answer reason: The oblique retinacular ligament (ORL) links PIP extension to DIP extension; when the PIP is held in extension, flexing the DIP places the ORL on stretch, promoting its lengthening. This positioning also encourages proper lateral band mechanics and glide by maintaining the extensor mechanism alignment at the PIP while moving the DIP. Options emphasizing DIP extension or composite flexion do not preferentially stretch the ORL, and PIP flexion with MCP blocked does not target ORL lengthening as directly as DIP flexion with the PIP stabilized in extension.

Question 20

Osteoporosis is disease of ?

Accepted Answer

Answer reason: Osteoporosis is a skeletal disorder characterized by decreased bone mass and deterioration of bone microarchitecture, leading to increased fragility and fracture risk. It primarily affects bones, especially in older adults and postmenopausal individuals. It is not a primary disease of the skin, brain, or muscles, though fractures can secondarily affect mobility and muscle function.

Question 21

Longest joint in the human body is?

Accepted Answer

Answer reason: The knee is considered the longest joint because it spans the greatest length between the distal femur and proximal tibia and includes large articular surfaces with extensive supporting structures (menisci, multiple major ligaments, and joint capsule). It is also the largest and one of the most complex synovial joints in the body. In contrast, the hip and shoulder are deep ball-and-socket joints with shorter joint spans, and the elbow is a smaller hinge-type joint.

Question 22

Biceps are found in?

Accepted Answer

Answer reason: The biceps brachii is a skeletal muscle located in the anterior compartment of the upper arm. It primarily flexes the elbow and supinates the forearm, confirming its location in the arm. While there is a biceps femoris in the thigh, the common use of “biceps” in basic anatomy refers to the biceps brachii in the arm. Therefore, among the options, "Arms" is the best answer.

Question 23

Which condition is characterized by the loss of bone density?

Accepted Answer

Answer reason: Osteoporosis is defined by decreased bone mineral density and deterioration of bone microarchitecture, leading to fragile bones and increased fracture risk. Arthritis primarily involves inflammation/degeneration of joints rather than a primary loss of bone density. Scoliosis is a lateral curvature of the spine, and rickets is defective bone mineralization in children due to vitamin D/calcium/phosphate issues rather than the classic generalized low bone density pattern of osteoporosis.

Question 24

Gout is a disorder of?

Accepted Answer

Answer reason: Gout is an inflammatory arthritis caused by deposition of monosodium urate crystals in and around joints due to hyperuricemia. It classically presents as acute, very painful monoarthritis (often the first metatarsophalangeal joint). While urate can also deposit in kidneys (e.g., stones), the primary disorder and hallmark clinical manifestation is joint inflammation. Therefore, the best answer is joints.

Question 25

Arthritis is a disorder of?

Accepted Answer

Answer reason: Arthritis literally refers to inflammation of a joint and clinically describes conditions that primarily affect joints, causing pain, stiffness, swelling, and reduced range of motion. While some types (e.g., rheumatoid arthritis) can have systemic manifestations, the primary disorder involves the joints. The other options are organ systems not primarily affected by the defining pathology of arthritis.

Question 26

Strongest muscles in human body are found in ?

Accepted Answer

Answer reason: The jaw muscles, particularly the masseter (with assistance from temporalis and medial pterygoid), can generate very high bite forces compared with most other skeletal muscles. In common anatomy/physiology references, the masseter is often cited as the "strongest" muscle when defined by force output. Neck, hand, and thigh muscles are powerful, but they are not typically considered the strongest by peak force generated at the site of action. Therefore, the best answer is the jaws.

Question 27

Bones are made of?

Accepted Answer

Answer reason: Bone matrix is mineralized primarily with calcium salts (mainly hydroxyapatite), which provide hardness and strength. While bone also contains water and organic components (collagen) and marrow contains fat, the key component that makes bone rigid is calcium-containing mineral. Therefore, among the choices, calcium is the best answer.

Question 28

What type of bone is the patella?

Accepted Answer

Answer reason: The patella (kneecap) is the largest sesamoid bone in the body, embedded within the tendon of the quadriceps femoris. Sesamoid bones develop within tendons where they pass over joints, helping reduce friction and improve the mechanical advantage of the muscle. Therefore, among the given options, sesamoid bone is the correct classification.

Question 29

Which tissue connects bone to bone?

Accepted Answer

Answer reason: Ligaments are dense connective tissue bands that connect one bone to another across a joint, providing stability and guiding joint motion. In contrast, tendons connect muscle to bone to transmit the force of muscle contraction. Cartilage primarily cushions and reduces friction at joint surfaces, and muscle is contractile tissue rather than a direct bone-to-bone connector.

Question 30

Rickets is the disease of?

Accepted Answer

Answer reason: Rickets is a disorder of bone mineralization in children, most commonly due to vitamin D deficiency (or impaired vitamin D metabolism). This leads to defective calcification of the growth plate and soft, weak bones with skeletal deformities (e.g., bowed legs). Therefore, the condition primarily affects the bones rather than skin, liver, or muscles.

Question 31

Based on the information presented, which deformity BEST describes the client’s finger injury?

Accepted Answer

Answer reason: Boutonniere deformity results from injury to the central slip of the extensor tendon at the PIP joint, leading to PIP flexion with compensatory DIP hyperextension and often PIP joint stiffness. This pattern distinguishes it from mallet finger (DIP flexion due to terminal extensor tendon injury) and jersey finger (inability to flex the DIP due to flexor digitorum profundus avulsion). Swan-neck deformity is characterized by PIP hyperextension with DIP flexion and is commonly associated with ligament laxity or chronic conditions rather than an acute central slip injury.

Question 32

In addition to considering the use of serial casting, which of the following splints should the OTR consider when deciding which type of splint would be MOST BENEFICIAL for the client’s middle finger?

Accepted Answer

Answer reason: For a middle-finger contracture or extension lag at the PIP joint, a dynamic PIP extension splint provides low-load, prolonged stretch that promotes improved PIP extension while still allowing some functional motion. This is often used alongside serial casting to gradually address soft-tissue tightness and restore joint range. Options focusing only on DIP positioning (B) will not adequately address a primary PIP extension deficit, and a full-length neoprene tube (C) is more for edema/support and does not deliver a directed corrective force. A rigid static splint immobilizing both PIP and DIP (A) may protect but is generally less effective than dynamic extension for improving PIP extension range when motion/creep is desired.

Question 33

Which system controls body movement?

Accepted Answer

Answer reason: Body movement is produced primarily by contraction of skeletal muscles, which pull on bones across joints to generate motion. The circulatory and respiratory systems support movement indirectly by delivering oxygen and nutrients and removing carbon dioxide, but they do not generate movement. Therefore, the muscular system is the best answer among the options.

Question 34

Fat embolism is most commonly seen in fracture of?

Accepted Answer

Answer reason: Fat embolism syndrome most commonly follows fractures of long bones with fatty marrow, especially the femur. Disruption of the medullary cavity allows marrow fat to enter venous circulation and embolize, classically causing respiratory distress, neurologic changes, and petechiae. While tibia and pelvis fractures can also be associated with fat embolism, femoral fractures are the most commonly cited and highest-risk single fracture type among the options. Radius fractures are less associated due to lower marrow fat burden.

Question 35

What is the name of the tough outer layer of bone?

Accepted Answer

Answer reason: The periosteum is the tough, fibrous connective tissue membrane that covers the external surface of bones (except at articular cartilage). It contains blood vessels, nerves, and osteogenic cells important for nourishment, growth, and fracture repair. Endosteum lines the inner surfaces of bone (medullary cavity and trabeculae), not the outer surface. "Compact bone" is the dense outer bony tissue layer, but the question asks for the tough outer covering (a membrane), which is periosteum.

Question 36

Which dietary recommendation is best for a client with osteoporosis?

Accepted Answer

Answer reason: Osteoporosis involves decreased bone mineral density, increasing fracture risk. Adequate calcium is needed for bone mineralization, and vitamin D improves intestinal calcium absorption and supports bone remodeling. Therefore, recommending foods high in calcium and vitamin D best addresses the underlying pathophysiology and helps slow bone loss. The other options do not directly improve bone density and “avoid dairy” may worsen calcium intake.

Question 37

A client with chronic back pain is scheduled for laminectomy. What is the primary goal of surgery?

Accepted Answer

Answer reason: A laminectomy removes part or all of the vertebral lamina to decompress the spinal canal. The main intended outcome is to relieve compression of spinal nerve roots (or the spinal cord) that causes pain, numbness, or weakness. Vertebral fusion is a different procedure aimed at stabilization, and bone spur removal may be part of decompression but is not the primary overall goal. Spinal cord tumor removal is a different indication and procedure entirely.

Question 38

How many bones are in an adult skeleton?

Accepted Answer

Answer reason: The standard accepted number of bones in the adult human skeleton is 206. Infants have more bones (often cited around 270) because many bones have not yet fused. During growth, fusion occurs in areas such as the skull, pelvis, and vertebral segments, reducing the total to the adult count. Therefore, 206 is the best answer among the options.

Question 39

Which of these covers and protects the end of long bones at joints?

Accepted Answer

Answer reason: Articular (hyaline) cartilage covers the ends of long bones in synovial joints, providing a smooth, low-friction surface and helping absorb shock. This protection reduces wear during movement and distributes load across the joint. Tendons connect muscle to bone, while collagen and fibronectin are structural proteins but are not the specific tissue layer that caps bone ends at joints.

Question 40

Which cells are responsible for bone formation?

Accepted Answer

Answer reason: Osteoblasts are the bone-forming cells that synthesize osteoid (bone matrix) and promote its mineralization, leading to new bone deposition. In contrast, osteoclasts resorb (break down) bone, osteocytes are mature bone cells that maintain bone tissue, and chondrocytes form cartilage. Therefore, the correct cell type for bone formation is osteoblasts.

Question 41

Which of the following conditions is characterized by a decrease in bone mineral density?

Accepted Answer

Answer reason: Osteoporosis is defined by reduced bone mass and microarchitectural deterioration, leading to decreased bone mineral density (BMD) and increased fracture risk. Osteoarthritis primarily involves degenerative cartilage loss and joint space narrowing rather than low BMD. Rheumatoid arthritis is an inflammatory autoimmune synovitis that can cause erosions and periarticular osteopenia but is not classically defined as a generalized decrease in BMD. Paget's disease involves disorganized bone remodeling with enlarged, structurally abnormal bone rather than a primary decrease in BMD.

Question 42

Which of the following is a hinge joint?

Accepted Answer

Answer reason: A hinge joint primarily permits flexion and extension in one plane, like the movement of a door hinge. The knee is a modified hinge synovial joint that mainly allows flexion and extension (with slight rotation when flexed). By contrast, the shoulder and hip are ball-and-socket joints allowing multiaxial movement, and the atlantoaxial joint is a pivot joint enabling head rotation.

Question 43

Which type of joint is the shoulder joint?

Accepted Answer

Answer reason: The shoulder (glenohumeral) joint is a synovial ball-and-socket joint formed by the head of the humerus articulating with the glenoid fossa of the scapula. This structure allows movement in multiple planes, including flexion/extension, abduction/adduction, and internal/external rotation, as well as circumduction. Hinge and pivot joints permit more limited, primarily uniaxial movements, while saddle joints are classically exemplified by the thumb carpometacarpal joint.

Question 44

Which joint is commonly affected by dislocation?

Accepted Answer

Answer reason: The shoulder (glenohumeral joint) is the most commonly dislocated major joint because it has a shallow glenoid socket and prioritizes mobility over stability. This anatomy makes it especially prone to anterior dislocation with falls or abduction/external rotation injuries. Knee and elbow dislocations occur but are less common overall, and finger dislocations are common in sports but the classic, most common overall joint dislocation tested is the shoulder.

Question 45

Which is the Largest Bone in the Human Body?

Accepted Answer

Answer reason: The femur (thigh bone) is the largest and strongest bone in the human body, bearing much of the body’s weight and providing major leverage for walking. The tibia is also a large weight-bearing bone but is smaller than the femur. The humerus is the largest bone of the upper limb, and the stapes is one of the smallest bones in the body (middle ear).

Question 46

Which structure is disrupted in an 'open book fracture'?

Accepted Answer

Answer reason: An "open book" pelvic fracture is caused by anteroposterior compression that forces the hemipelves to externally rotate, producing diastasis (widening) of the pubic symphysis. This results from disruption of the pubic symphysis ligamentous complex and often associated pelvic ring instability. Although sacroiliac ligaments can also be injured in more severe APC patterns, the classic defining disruption is at the pubic symphysis. Therefore, the pubic symphysis is the best answer.

Question 47

What is the type of joint between the metacarpal bones and the phalanges?

Accepted Answer

Answer reason: The joints between the metacarpals and the phalanges (metacarpophalangeal region) primarily permit flexion and extension, consistent with a hinge-type functional classification in basic anatomy teaching. They do not have the multiaxial rotation of a ball-and-socket joint, nor the rotation about a central axis seen in pivot joints. Gliding joints describe planar movement between flat articular surfaces, which does not match the primary movements at this location. Therefore, among the provided options, hinge joint is the best answer.

Question 48

Which type of joint is the wrist joint?

Accepted Answer

Answer reason: The wrist (radiocarpal and intercarpal complex) is commonly classified in basic anatomy questions as a gliding (plane) synovial joint due to the sliding movements between the carpal bones contributing to wrist motion. Hinge joints primarily allow flexion/extension (e.g., elbow), pivot joints allow rotation (e.g., atlantoaxial), and ball-and-socket joints allow multiaxial movement (e.g., shoulder/hip). Therefore, among the provided options, gliding joint is the best answer.

Question 49

" Haversian canals " are found in _?

Accepted Answer

Answer reason: Haversian canals are the central channels of osteons (Haversian systems) in compact bone. They contain blood vessels and nerves and run longitudinally to support bone nourishment and innervation. Brain and heart tissues do not have osteons, so they do not contain Haversian canals.

Question 50

Tenosynovitis is Inflammation of _____________?

Accepted Answer

Answer reason: Tenosynovitis refers to inflammation of a tendon (teno-) and its synovial sheath (-synovitis). This condition commonly affects tendons in areas like the wrist and hand and can cause pain with movement due to sheath swelling and friction. The other options describe inflammation of muscle (myositis), joint/ligament structures (arthritis/sprain-related), or lymph nodes (lymphadenitis), which are different entities.

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