ATI LPN
Cardiovascular Exam Questions Quizlet Questions
Question 1 of 5
Features of the venous system include all of the following EXCEPT:
Correct Answer: D
Rationale: Valves are generally absent in the cerebral circulation compared to other venous systems.
Question 2 of 5
What structures in the heart wall prevent the AV (atrioventricular) valves from opening up into the atria?
Correct Answer: A
Rationale: Papillary muscles contract to pull on the chordae tendinae, preventing AV valve prolapse into the atria.
Question 3 of 5
The cardiac control center (cardioregulatory center) is located in the
Correct Answer: C
Rationale: The cardiac control center, which regulates heart rate and cardiac output, is located in the medulla oblongata of the brainstem.
Question 4 of 5
If the diameter of a blood vessel decreases, then the resistance will_____, thus blood pressure will _____.
Correct Answer: C
Rationale: A decrease in blood vessel diameter increases resistance, which subsequently raises blood pressure according to Poiseuille's law.
Question 5 of 5
Identify the main vessels that deliver oxygen rich blood to the head.
Correct Answer: C
Rationale: The common carotid arteries deliver oxygenated blood to the head and neck.