What is the difference between compact bone and spongy bone?

Correct Answer: D

Rationale: Compact bone is dense with osteons, while spongy bone is porous with trabeculae—differing in cell arrangement, not marrow type, material (both hydroxyapatite), or cell size. 'They have different arrangement of bone cells' is correct.

Correct Answer: D

Rationale: The axial skeleton includes the skull (sphenoid), vertebral column (sacrum), and hyoid bone. The clavicle (collarbone) is part of the appendicular skeleton, specifically the pectoral girdle, not the axial skeleton.

Correct Answer: D

Rationale: The mastoid process, a bony projection behind the ear, is part of the temporal bone. The sphenoid, parietal, and occipital bones lack this feature.

Correct Answer: C

Rationale: The false pelvis (greater pelvis) lies above the pelvic brim and is wider in females for childbirth, thus narrower in males. It’s part of the skeletal system, not inferior to the true pelvis or male-only.

Correct Answer: D

Rationale: Tendons (connecting muscle to bone) and ligaments (connecting bone to bone) are both dense, fibrous connective tissues composed primarily of collagen fibers. While ‘connective tissue’ (B) is broadly correct, ‘fibrous connective tissue’ (D) is more specific and accurate, distinguishing them from other connective tissue types like adipose or loose areolar tissue.