The appendicular skeleton groups together which sets of bones?

Correct Answer: A

Rationale: Appendicular skeleton: arms/hands, legs/feet, shoulder (pectoral) girdle, pelvic girdle—limbs and supports. Others include axial parts. Answer is A, per the document.

Correct Answer: A

Rationale: Distally, the tibia articulates with tarsals (e.g., talus) at the ankle, not metatarsals, phalanges, or femur (proximal). Answer is A, per the document.

Correct Answer: C

Rationale: The acetabulum, a socket in the pelvis (coxal bone), articulates with the femur. Not occipital, humerus, or tibia. Answer is C, per the document.

Correct Answer: C

Rationale: A foramen is a hole in a bone (e.g., foramen magnum) for nerves/vessels, not a depression, roughening, or projection. Answer is C, per the document.

Correct Answer: C

Rationale: The rib cage (ribs, sternum, thoracic vertebrae) primarily protects the heart and lungs in the thoracic cavity. Stomach is abdominal, spinal cord is within vertebrae, and lungs attach via pleura—not the rib cage’s purpose. 'Protect the heart and lungs' is correct.