Which of the following bones is not part of the axial skeleton?

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: 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.

Correct Answer: D

Rationale: Hyaline cartilage is avascular (lacks blood capillaries), contains cells (chondrocytes) in lacunae (spaces), but does not have prominent fibers like elastic or fibrous cartilage. Its matrix is smooth and glassy, making ‘fibres’ the correct feature it lacks.

Correct Answer: B

Rationale: Ribs, sternum, and scapulae are flat bones, characterized by their thin, broad structure. Flat bones provide protection (e.g., ribs for lungs) and surfaces for muscle attachment (e.g., scapulae). They aren’t long (elongated), short (cuboidal), or irregular (complexly shaped).