To flap your arms like a bird involves

Correct Answer: C

Rationale: Flapping arms involves abduction (raising arms laterally) and adduction (lowering them), mimicking wings. Flexion/extension bends/straightens, supination/pronation rotates, and elevation/depression is shoulders, making 'abduction and adduction' correct.

Correct Answer: B

Rationale: A fontanelle is a soft, membranous gap between fetal cranial bones, not a cavity in bone (sinuses are cavities). This makes 'False' correct.

Correct Answer: B

Rationale: True ribs (vertebrosternal, 1-7) attach directly to the sternum. Ribs 11-12 are floating (vertebral), with no sternal connection, making 'False' correct.

Correct Answer: A

Rationale: The lateral malleolus, the fibula’s distal end, forms the ankle’s outer bump. This is correct, making 'True' the answer.

Correct Answer: A

Rationale: Shrugging raises the shoulders, an elevation movement of the scapulae. This is correct, making 'True' the answer.