With age, the size of the heart typically and the resting heart rate

Correct Answer: D

Rationale: With age, the heart size increases due to hypertrophy, and resting heart rate decreases due to reduced pacemaker efficiency.

Correct Answer: B

Rationale: Sinuses in the cranial cavity refer to venous sinuses, not arteries; large arteries are not called sinuses.

Correct Answer: D

Rationale: The pericardium is the sac enclosing the heart, protecting and lubricating it.

Correct Answer: B

Rationale: The renal artery supplies the kidney; the suprarenal artery supplies the adrenal glands.

Correct Answer: D

Rationale: The normal conduction pathway is SA node, AV node, bundle of His, and Purkinje fibers.