The only part of the skull that can move is the ... .

Correct Answer: A

Rationale: The mandible (lower jaw) is the only movable bone of the skull, articulating at the temporomandibular joint for actions like chewing. The hyoid, while in the neck, is not part of the skull and doesn’t move in the same context.

Correct Answer: B

Rationale: The scapula (shoulder blade) is triangular, with a broad base superiorly and an apex inferiorly, optimizing muscle attachment and shoulder mobility. It’s neither rectangular nor square.

Correct Answer: A

Rationale: The thumb (digit 1) has two phalanges (proximal and distal), unlike the other fingers (digits 2–5), which have three (proximal, middle, distal), due to its unique structure for opposition.

Correct Answer: B

Rationale: Metatarsals are numbered 1 to 5, from the hallux (big toe) to the pinky toe, matching the five digits of the foot and their phalanges.

Correct Answer: B

Rationale: The cranium comprises 8 bones protecting the brain, including occipital, frontal, and parietal bones. The maxilla, a facial bone (1 of 14), forms the upper jaw and face, not the cranium, distinguishing it from the cranial group.