ATI LPN
Cardiovascular Exam Questions Quizlet Questions
Question 1 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 2 of 5
Identify the structure found in a fetus that allows blood to flow directly from the pulmonary trunk into the aorta.
Correct Answer: D
Rationale: In fetal circulation, the ductus arteriosus allows blood to bypass the non-functional fetal lungs by shunting blood from the pulmonary trunk directly into the aorta.
Question 3 of 5
The difference between a person's maximum cardiac output and resting cardiac output is called the
Correct Answer: D
Rationale: Cardiac reserve reflects the heart's ability to increase its output above resting levels during exercise or stress.
Question 4 of 5
The circle of Willis is an example of an anastomosis.
Correct Answer: A
Rationale: The circle of Willis is an arterial anastomosis providing collateral blood flow to the brain.
Question 5 of 5
The tissue layers of blood vessels from outer layer to inner layer are:
Correct Answer: B
Rationale: Blood vessel layers are tunica externa (outer), tunica media (middle), and tunica intima (inner).