ATI RN
Questions About the Cardiovascular System Questions
Question 1 of 5
Small, colorless bodies that function in blood clotting and hemostasis
Correct Answer: B
Rationale: Platelets (B) initiate clotting and hemostasis.
Question 2 of 5
Which of the following is not involved in platelet plug formation?
Correct Answer: D
Rationale: ADH (D) regulates water, not platelet binding; others (A, B, C) aid plug formation.
Question 3 of 5
A thrombus is:
Correct Answer: D
Rationale: A thrombus (D) is a clot on vessel walls.
Question 4 of 5
In the myogenic response,
Correct Answer: C
Rationale: The myogenic response (C) is smooth muscle contraction in response to stretch, regulating flow. A is skeletal muscle pump, B is cardiac, D is incorrect (endothelins constrict).
Question 5 of 5
The myocardium would be the thickest in the
Correct Answer: B
Rationale: The left ventricle (B) has the thickest myocardium to pump blood into the high-pressure systemic circuit.