Which statement correctly defines an osteon?

Correct Answer: C

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

Correct Answer: B

Rationale: Tendons are fibrous tissues connecting muscles to bones, transmitting force for movement. Ligaments link bones, not muscles to ligaments or bone cells, making 'To link muscles to bones' correct.

Correct Answer: A

Rationale: The coronal suture runs transversely, separating the frontal bone from the parietal bones, and extends from the anterior fontanel (top center) toward the anterolateral fontanels (sides). The lambdoidal suture is posterior, squamosal is lateral, and longitudinal isn’t a standard cranial suture term (likely meant sagittal).

Correct Answer: C

Rationale: The superior and middle conchae (turbinates) are projections of the ethmoid bone in the nasal cavity, aiding air filtration. The inferior concha is separate, while palatine, nasal, and maxilla bones don’t form these structures.

Correct Answer: D

Rationale: The cribriform plate, perforated for olfactory nerves, is part of the ethmoid bone. Sphenoid, maxilla, temporal, and vomer lack this structure.