The corpus callosum facilitates communication between the

Correct Answer: A

Rationale: The corpus callosum connects the left and right brain (A). Not skeletal-neural (B), brain-spinal (C, via brainstem), or thalamus-hypothalamus (D).

Correct Answer: C

Rationale: The vulva (C) is primary female external genitalia. Gonads (A, ovaries) are internal, testes (B) are male, and uterus (D) is internal.

Correct Answer: A

Rationale: The nose (A) is anterior (front). Ears (B) are lateral, occipital lobe (C) is posterior, and temporal lobe (D) is lateral.

Correct Answer: B

Rationale: The thyroid needs iodine (B) to synthesize T4. Potassium (A), sodium (C), and magnesium (D) are not directly required.

Correct Answer: A

Rationale: Pepsin breaks down proteins (A) in the stomach. Starches (B) are amylase, fats (C) are bile/lipase, and absorption (D) is intestines.