ATI LPN
Cardiovascular MCQ Questions Questions
Question 1 of 5
Arteriolar constriction is caused by:
Correct Answer: A
Rationale: Serotonin causes arteriolar constriction by activating smooth muscle receptors.
Question 2 of 5
The first sound of the heart beat results from
Correct Answer: B
Rationale: The first heart sound ('lub') is caused by the closing of the AV valves at the start of ventricular systole.
Question 3 of 5
If you stand up too quickly and blood pressure drops, baroreceptors in the carotid arteries will signal the cardioregulatory center to send
Correct Answer: D
Rationale: When blood pressure drops, baroreceptors signal the cardio regulatory center to activate the sympathetic nervous system, increasing heart rate to restore blood pressure.
Question 4 of 5
Identify the factors that affect peripheral resistance.
Correct Answer: A
Rationale: Peripheral resistance is primarily influenced by arterial diameter and length, as well as blood viscosity.
Question 5 of 5
What vessels deliver oxygen rich blood to the legs?
Correct Answer: A
Rationale: The external iliac arteries supply oxygenated blood to the legs.