Which term refers to the first seven pairs of ribs that attach directly to the sternum via costal cartilage?

Correct Answer: B

Rationale: The first seven pairs of ribs are 'true ribs,' attaching directly to the sternum via costal cartilage, forming the rib cage’s core. 'Actual' and 'real' are not anatomical terms in this context.

Correct Answer: C

Rationale: The fovea capitis is a small pit in the femoral head where the ligamentum teres attaches, anchoring it in the acetabulum. Other options are different femoral features (e.g., trochanters are projections).

Correct Answer: A

Rationale: The skeletal system is divided into the axial skeleton (skull, vertebral column, thoracic cage; 80 bones) and the appendicular skeleton (limbs, girdles; 126 bones), totaling 206 bones in adults. B refers to bone shapes, C to bone tissue types, and D to joint/connective tissue types—none are the main divisions.

Correct Answer: A

Rationale: The vertebral column is sequenced top-down: cervical (7), thoracic (12), lumbar (5), sacral (5, fused), coccygeal (4, fused). The thoracic region, with rib attachments, lies directly below the cervical region in the upper back.