During bone growth, the lengthening of long bones occurs at the:
Medullary cavity
Epiphyseal plate
Periosteum
Articular cartilage
The Correct Answer is B
A. Medullary cavity: The medullary cavity is the hollow central space within the diaphysis that contains bone marrow; it is not where bone lengthening takes place.
B. Epiphyseal plate: The epiphyseal plate (growth plate) is the area of hyaline cartilage between the diaphysis and epiphysis where new bone is produced, leading to longitudinal bone growth during development.
C. Periosteum: The periosteum is a dense connective tissue layer covering the outer surface of bones and contributes to bone thickness and repair rather than length.
D. Articular cartilage: Articular cartilage covers the ends of bones in joints to provide a smooth surface for movement but is not involved in bone growth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Saddle:Saddle joints allow biaxial movement (for example the thumb carpometacarpal joint) but do not provide the greatest overall range of motion.
B. Hinge:Hinge joints permit movement primarily in one plane (flexion and extension), limiting their range compared with multiaxial joints.
C. Pivot:Pivot joints allow rotation around a single axis (for example the atlantoaxial joint) and therefore have a restricted range of motion.
D. Ball-and-socket:Ball-and-socket joints permit multiaxial movement including flexion/extension, abduction/adduction, and rotation, offering the greatest range of motion.
Correct Answer is D
Explanation
A. Saddle joint: Saddle joints allow biaxial movement (e.g., thumb carpometacarpal joint) but do not permit movement in all directions.
B. Pivot joint: Pivot joints allow rotation around a single axis (e.g., atlantoaxial joint) and therefore do not provide multiaxial movement.
C. Hinge joint: Hinge joints permit movement primarily in one plane (flexion/extension) like the elbow and do not allow movement in all directions.
D. Ball-and-socket joint: Ball-and-socket joints (for example the shoulder and hip) permit multiaxial movement including flexion/extension, abduction/adduction, and rotation, allowing the greatest directional range.
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