Which one of the following bones is an example of a slightly moveable joint?

Correct Answer: D

Rationale: The spine (vertebral column) has intervertebral discs, making its joints (e.g., between vertebrae) slightly movable (amphiarthroses). The skull is fixed, clavicle and pelvis have synovial joints, making 'Spine' correct.

Correct Answer: C

Rationale: Long bones are longer than wide (e.g., humerus, tibia, metacarpals). Carpals (wrist bones) are short bones, roughly cube-shaped, not long. Answer is C, per the document.

Correct Answer: A

Rationale: Pronation/supination occur in the forearm, with radius rotating over ulna. Foot does inversion/eversion, thigh and wrist don’t pronate/supinate. Answer is A, per the document.

Correct Answer: B

Rationale: The lateral condyle of the femur articulates with the tibia at the knee joint. Tuberosity, trochanter, and tubercle are muscle attachments, not articulations. Answer is B, per the document.

Correct Answer: D

Rationale: Osteoclasts reabsorb bone, breaking it down. Osteons are structures, osteoblasts form bone, osteocytes maintain it. Answer is D, per the document (note: text error corrected—osteoblast matures to osteocyte, not osteoclast).