ATI LPN
NCLEX Cardiovascular Questions Quizlet Questions
Question 1 of 5
Purkinje fibers are found in:
Correct Answer: A
Rationale: Purkinje fibers, part of the conduction system, are located in the endocardium of the heart.
Question 2 of 5
Sympathetic stimulation of the heart:
Correct Answer: D
Rationale: Sympathetic stimulation releases norepinephrine, increasing heart rate and contractility.
Question 3 of 5
What is the percentage of lactic metabolism in the liver during strenuous exercise?
Correct Answer: D
Rationale: The liver metabolizes about 60% of lactate during exercise via the Cori cycle.
Question 4 of 5
In rheumatic heart disease, only CMI is important:
Correct Answer: B
Rationale: Both cellular immunity (CMI) and humoral immunity (antibodies) contribute to rheumatic heart disease.
Question 5 of 5
The most characteristic and frequent feature of chronic rheumatic heart disease is the development of:
Correct Answer: D
Rationale: Mitral stenosis is the hallmark of chronic rheumatic heart disease.