ATI RN
Cardiovascular System Test Questions Questions
Question 1 of 5
A heart rate of less than 60 beats per minute is called
Correct Answer: D
Rationale: Bradycardia (D) is a heart rate <60 bpm. Heart block (A) is a conduction issue, tachycardia (B) is >100 bpm, and fibrillation (C) is uncoordinated beating.
Question 2 of 5
Inflammation of veins, called ___ is a serious condition because a thromboembolism may occur.
Correct Answer: A
Rationale: Phlebitis (A) is vein inflammation, risking thromboembolism (clot dislodgement). Varicose veins (B) and hemorrhoids (C) are vein conditions, pulmonary embolism (D) is a result, not the condition.
Question 3 of 5
Identify the hormone(s) that will decrease blood volume and thus blood pressure.
Correct Answer: C
Rationale: ANH (C) decreases blood volume and BP by promoting sodium/water loss and vasodilation. ADH and aldosterone (A, B, D) increase volume.
Question 4 of 5
What vessels drain oxygen poor blood from the brain, head, and neck?
Correct Answer: A
Rationale: Jugular veins (A) drain deoxygenated blood from the brain, head, and neck. Subclavian veins (B) drain arms, carotid (C) and brachiocephalic (D) are arteries.
Question 5 of 5
The pacemaker of heart is:
Correct Answer: A
Rationale: The SA node (A) is the heart’s pacemaker, generating impulses at 60-100 bpm. AV node (B) delays, Bundle of His (C) conducts, and Purkinje fibers (D) spread the signal.