To extend a body part beyond 180 degrees is called dorsiflexion.

Correct Answer: B

Rationale: Dorsiflexion is ankle flexion toward the shin (e.g., toes up), not exceeding 180°. Hyperextension is beyond 180°, making 'False' correct.

Correct Answer: C

Rationale: Long bones (e.g., femur) primarily act as levers for muscle movement (e.g., walking) and provide support (e.g., weight-bearing). A is broad, B is more flat bones, and D is cartilage/joints, making 'Act as levers for muscles and to provide support' correct.

Correct Answer: D

Rationale: The elbow is a hinge joint, allowing flexion and extension in one plane. The hip and shoulder are ball-and-socket, and the ribcage has slightly movable joints, making 'Elbow' correct.

Correct Answer: B

Rationale: The occipital bone, at the skull’s base, is the most superior in anatomical position (topmost). The manubrium (sternum top) is chest-level, cervical vertebra #3 is mid-neck, and patella is knee-level. Answer is B, per the document.

Correct Answer: B

Rationale: Osteocytes reside in lacunae, small pits in bone matrix (compact or spongy). Haversian canals hold vessels, trabeculae are spongy structures, and endosteum lines cavities—not homes for osteocytes. Answer is B, per the document.