List the components of the cardiac conduction system in the correct sequence for impulse transmission.

Correct Answer: C

Rationale: The sequence is SA node (initiates impulse), AV node, AV bundle, then Purkinje fibers.

Correct Answer: A

Rationale: The vasomotor center, which regulates blood vessel diameter and vascular tone, is located in the medulla oblongata.

Correct Answer: C

Rationale: The foramen ovale allows blood to pass from the right atrium to the left atrium in the fetus.

Correct Answer: C

Rationale: Gap junctions allow for the rapid transmission of electrical impulses between cardiac muscle cells, facilitating synchronized contractions of the heart.

Correct Answer: C

Rationale: The vagus nerve slows heart rate via parasympathetic input; severing it during transplant removes this inhibition, increasing resting heart rate.