The term sural refers to the:

Correct Answer: A

Rationale: Sural refers to the calf (posterior lower leg), not forearm, kneecap (C, patellar), or thigh (D, femoral). This term's use in anatomy specifies regions, like sural nerve pathways, making A correct.

Correct Answer: D

Rationale: The visceral pericardium covers the heart's surface, unlike parietal pleura (A, lungs), parietal pericardium (B, heart sac), or visceral peritoneum (C, abdominal organs). Visceral layers adhere to organs, a precise anatomical distinction.

Correct Answer: A

Rationale: The stomach is in the upper left quadrant, below the diaphragm, left of midline, unlike lower left, upper right, or lower right. Quadrant mapping in anatomy pinpoints organs for diagnosis, confirming A.

Correct Answer: D

Rationale: The endocrine system (e.g., thyroid) secretes hormones, unlike integumentary (A, skin), cardiovascular (B, circulation), or digestive (C, food). Anatomy ties glands to regulation e.g., insulin from pancreas making D correct.

Correct Answer: B

Rationale: Positive feedback amplifies change (e.g., childbirth contractions), unlike homeostasis (A, stability), negative feedback (C, reversal), or homeothermic (D, temperature). Anatomy highlights this in rare escalating processes, confirming B.