The xiphoid process is the most inferior part of the sternum.

Correct Answer: A

Rationale: The sternum’s xiphoid process is its lowest part, below the manubrium and body, often cartilaginous in youth. This is correct, making 'True' the answer.

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: B

Rationale: The axial skeleton includes 80 bones (skull, vertebral column, thoracic cage) in the central body, not extremities. The appendicular has 126 bones at extremities. '100' and '126' are incorrect, making 'Consists of 80 bones which are located in the upper central part of the body' accurate.

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.