ATI LPN
Cardiovascular Assessment Questions Questions
Question 1 of 5
Regarding NO synthase:
Correct Answer: C
Rationale: NO synthase is inactivated by haemoglobin, which binds to nitric oxide and reduces its bioavailability.
Question 2 of 5
Put these parts of the electrical conducting system of the heart in the correct order for conduction of the cardiac impulse: 1. Atrioventricular node 2. Atrioventricular(AV) bundle (bundle of His) 3. Left and right bundle branches 4. Sinoatrial node 5. Purkinje fibres
Correct Answer: B
Rationale: The correct sequence of conduction is SA node -> AV node -> AV bundle -> Bundle branches -> Purkinje fibers.
Question 3 of 5
Identify the chamber of the heart with the thickest wall.
Correct Answer: B
Rationale: The left ventricle has the thickest wall as it pumps blood into the aorta against high systemic pressure.
Question 4 of 5
What wave of an ECG (EKG) represents depolarization of the atria?
Correct Answer: A
Rationale: The P wave represents atrial depolarization on an ECG.
Question 5 of 5
Which of the following is NOT an aspect of capillary structure and function?
Correct Answer: D
Rationale: Capillary blood flow is typically slow to allow sufficient time for the exchange of gases, nutrients, and waste products.