To what does the term 'osteon' refer in bone?

Correct Answer: C

Rationale: An osteon is a cylindrical unit of compact bone with concentric lamellae around a Haversian canal. Not cells, projections, or membrane. Answer is C, per the document.

Correct Answer: B

Rationale: Humerus (upper arm) and radius (forearm) are in the arm, part of the appendicular skeleton. ‘In the arm’ is more specific than ‘axial.’ Answer is B, per the document.

Correct Answer: D

Rationale: The hyoid, in the neck, supports the tongue, superior to the larynx, not articulating with other bones. Answer is D, per the document.

Correct Answer: B

Rationale: The cranium (skull’s cranial bones) encases and protects the brain. Calcium is a mineral, cerebrum and cerebellum are brain parts, not bones, making 'The cranium' correct.

Correct Answer: C

Rationale: A joint (articulation) is where two bones meet (e.g., knee), including hinge or ball-and-socket types (A, B). Tendons connect muscle to bone, not joints, making 'The place where two bones are joined' correct.