Which is the more elastic part of an intervertebral disc?

Correct Answer: B

Rationale: The nucleus pulposus, the inner core of an intervertebral disc, is gelatinous and elastic, allowing flexibility and shock absorption. The anulus fibrosus, the outer fibrous ring, is tougher and less elastic, providing strength.

Correct Answer: B

Rationale: Metacarpals are numbered 1 to 5 from thumb (lateral) to pinky (medial) in anatomical position, aligning with phalange numbering and standard convention.

Correct Answer: A

Rationale: The calcaneus (heel bone), alongside the talus, forms the ankle’s major structure, supporting weight and articulating with the tibia/fibula. Cuboid and navicular are more distal.

Correct Answer: B

Rationale: An adult human typically has 12 pairs of ribs (24 total): 7 true pairs (attaching to the sternum), 3 false pairs (indirectly attached), and 2 floating pairs (no sternal attachment). 10 undercounts, while 14 and 16 exceed the standard anatomical count.