The depression on the posterior side of the humerus for the ulna when the elbow is extended is the:

Correct Answer: C

Rationale: The olecranon fossa, on the humerus’ posterior side, receives the ulna’s olecranon process when the elbow extends. The capitulum and trochlea articulate with the radius and ulna, and the head is proximal, making 'olecranon fossa' correct.

Correct Answer: B

Rationale: Sutures, immovable skull joints, are fibrous, held by connective tissue. Synovial joints are movable, cartilaginous are slightly movable, making 'fibrous' correct (incomplete options assumed).

Correct Answer: B

Rationale: Hinge joints (e.g., elbow) permit up-and-down movement (flexion/extension) in one plane. Gliding allows sliding, condyloid two planes, and saddle is multi-directional, making 'hinge' correct.

Correct Answer: C

Rationale: Osteoarthritis involves articular cartilage deterioration due to wear, causing joint pain. Osteoporosis is bone density loss, rheumatoid arthritis is autoimmune, and gouty arthritis is uric acid-related, making 'osteoarthritis' correct.

Correct Answer: A

Rationale: Endochondral ossification replaces a hyaline cartilage model with bone (e.g., femur), a key process for long bones. This is accurate, making 'True' correct.