ATI RN
100 Questions on the Cardiovascular System PDF Questions
Question 1 of 5
Agranulocytes involved in immunity; produce antibodies
Correct Answer: C
Rationale: Lymphocytes (C), especially B cells, produce antibodies.
Question 2 of 5
Which of the following is not an example of hemostasis?
Correct Answer: B
Rationale: Temperature regulation (B) is unrelated to hemostasis (stopping blood loss).
Question 3 of 5
A hemopoietic growth factor:
Correct Answer: C
Rationale: Growth factors (C) like EPO stimulate blood cell precursors.
Question 4 of 5
In the renin-angiotensin-aldosterone mechanism,
Correct Answer: C
Rationale: Aldosterone (C) increases sodium reabsorption, raising BP. Renin is from kidneys (not liver, A), aldosterone reduces urine output (not B), so only C is true.
Question 5 of 5
The layer secretes chemicals that help to regulate ionic environments and strength of contraction and serve as powerful vasoconstrictors.
Correct Answer: B
Rationale: The endocardium (B), via endothelial cells, secretes substances (e.g., endothelins) affecting ions, contraction, and vasoconstriction. Others (A, C, D) don’t secrete these.