The diaphragm separates the ___ cavities.

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: 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.

Correct Answer: A

Rationale: GnRH stimulates LH and FSH (A) release for reproductive function. GH/TSH (B) are growth/thyroid, insulin/glucagon (C) are pancreatic, and ADH/oxytocin (D) are posterior pituitary.

Correct Answer: A

Rationale: True (A): Sperm production requires a lower temperature, maintained by the scrotum. False (B) is incorrect.