Sympathetic stimulation of the arteries within the penis causes engorgement of the erectile tissue as arterial flow increases and venous drainage decreases.

Correct Answer: B

Rationale: False (B): Parasympathetic stimulation causes erection, not sympathetic. True (A) is incorrect.

Correct Answer: D

Rationale: Trachea and bronchi have cartilage (A), ciliated epithelium (B), and goblet cells (C), but not simple squamous epithelium (D), which is in alveoli.

Correct Answer: C

Rationale: Peripheral chemoreceptors are in aortic and carotid bodies (C), sensing blood gases. Lungs (A), brain (B), and heart (D) have other roles.

Correct Answer: C

Rationale: External intercostals and diaphragm (C) expand the chest for inspiration. Internal intercostals (A, D) aid expiration, abdominals (B) assist forced expiration.

Correct Answer: A

Rationale: True (A): The nasal septum separates right and left nasal cavities. False (B) is incorrect.