ATI LPN
Cardiovascular Questions and Answers PDF Questions
Question 1 of 5
The vasomotor center that controls the diameter of blood vessels is located in the
Correct Answer: A
Rationale: The vasomotor center, which regulates blood vessel diameter and vascular tone, is located in the medulla oblongata.
Question 2 of 5
Cardiac muscle fibres are electrically connected to neighbouring fibres by
Correct Answer: C
Rationale: Gap junctions allow for the rapid transmission of electrical impulses between cardiac muscle cells, facilitating synchronized contractions of the heart.
Question 3 of 5
During heart transplants, the nerves are severed resulting in a faster resting heart rate (approximately 100 beats per minute) after the transplant.
Correct Answer: C
Rationale: The vagus nerve slows heart rate via parasympathetic input; severing it during transplant removes this inhibition, increasing resting heart rate.
Question 4 of 5
Both the internal and external carotid arteries bring blood to the brain.
Correct Answer: B
Rationale: The internal carotid supplies the brain, while the external carotid supplies the face and neck.
Question 5 of 5
The order of blood flow through the vessels is:
Correct Answer: B
Rationale: Blood flows from arteries to arterioles, capillaries, venules, and veins.