Identify the plane that would divide the body into left and right sides.

Correct Answer: D

Rationale: The sagittal plane divides left and right (e.g., midsagittal at midline), unlike coronal/frontal (A, B, front-back), or transverse (C, top-bottom). Anatomical planes standardize sectioning, vital for imaging like MRI, confirming D.

Correct Answer: B

Rationale: The mediastinum, a central thoracic region, contains the heart, thymus, and trachea, but not lungs, which are in pleural cavities. Anatomically, this midline space organizes chest structures, excluding lateral lungs.

Correct Answer: C

Rationale: The gallbladder, under the liver, is in the upper right quadrant, not left (A, B) or lower right. Surgical anatomy uses quadrants for precision, guiding incisions like cholecystectomy, making C correct.

Correct Answer: B

Rationale: The female reproductive system includes ovaries, not testes (A, male), femur (C, bone), or thyroid (D, endocrine). Anatomically, ovaries produce eggs, central to female reproduction, confirming B.

Correct Answer: B

Rationale: Systemic diseases affect multiple systems (e.g., diabetes), not chronic (A, long-term), acute (C, short-term), or local (D, confined). Anatomical terminology clarifies disease scope, making B correct.