What is a secondary defense for the body against pathogens?

Correct Answer: C

Rationale: Inflammation (C) is a secondary nonspecific defense. Tears (A), urine (B), and mucus (D) are primary barriers.

Correct Answer: A

Rationale: The diaphragm separates abdominal and thoracic cavities (A). Cranial-vertebral (B) are dorsal, vertebral-pericardial (C) is incorrect, and pelvic-abdominal (D) is below.

Correct Answer: C

Rationale: Smooth muscle is in blood vessel walls (C). Heart (A) is cardiac muscle, head/neck (B) and torso/limbs (D) include skeletal.

Correct Answer: C

Rationale: The skull’s main parts are the cranium and mandible (C). Others (A, B, D) are specific bones, not divisions.

Correct Answer: D

Rationale: The parietal lobe affects perception (D, e.g., touch). Breathing (A) is medulla, memory (B) is hippocampus, and attention (C) is frontal.