Which of the following bone markings is NOT a projection for muscle attachment?

Correct Answer: A

Rationale: A fossa is a depression (e.g., for articulation), not a muscle attachment projection. Tuberosity, tubercle, and trochanter are projections for muscles. Answer is A, per the document.

Correct Answer: B

Rationale: Carpals are the 8 wrist bones. Rib attachments are costal facets, tendon-embedded are sesamoids, thumbs have phalanges. Answer is B, per the document.

Correct Answer: A

Rationale: Synovial joints have a cavity with synovial fluid, unlike fibrous (tissue) or cartilaginous (cartilage) joints. Tendons don’t cover surfaces. Answer is A, per the document.

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: D

Rationale: Bones support, store minerals/fat, enable movement, produce blood cells (haemopoiesis), and protect organs—not hormones or leverage alone. Answer is D, per the document.