The only movable bone of the skull is the:

Correct Answer: B

Rationale: The mandible (lower jaw) is the only skull bone that moves, via the temporomandibular joint, enabling chewing. The cranium, maxilla, and vomer are fixed, making 'mandible' correct.

Correct Answer: B

Rationale: The humerus is the single bone of the upper arm, from shoulder to elbow. Carpals are wrist, radius and ulna are forearm, making 'humerus' correct.

Correct Answer: D

Rationale: The pubis, the anterior lower part of the coxal bone, forms the pubic symphysis. The ilium is superior, ischium posterior, and acetabulum lateral, making 'Pubis' correct.

Correct Answer: B

Rationale: One foot has 7 tarsals (ankle), 5 metatarsals (foot), and 14 phalanges (toes: 2 in big toe, 3 each in others). '7-5-14' is the correct count.

Correct Answer: C

Rationale: The thumb’s carpometacarpal joint is a saddle joint, allowing opposition (e.g., grasping). Hinge is one-plane, condyloid is two-plane, and gliding is sliding, making 'saddle' correct.