ATI RN
Cardiovascular System Anatomy Questions and Answers Questions
Question 1 of 5
Which of the following is unique to cardiac muscle cells?
Correct Answer: C
Rationale: Autorhythmicity (C) is unique to cardiac muscle (pacemaker cells). Sarcoplasmic reticulum (A), gap junctions (B), and mitochondria (D) exist in other muscles too.
Question 2 of 5
Based on an understanding of beta blockers used for unstable angina, the nurse administers a beta blocker because of which of the following actions?
Correct Answer: B
Rationale: Beta blockers (B) decrease heart rate, reducing oxygen demand in unstable angina. They don’t increase contractility (A), shift fluids (C), or vasodilate coronaries (D).
Question 3 of 5
Blood supply to the liver, spleen and stomach is carried in:
Correct Answer: D
Rationale: The coeliac artery (D) supplies the liver, spleen, and stomach in mammals. Cranial (A) and caudal (C) mesenteric serve intestines, external iliac (B) the hindlimb.
Question 4 of 5
Problems related to heart valves can be categorized into three main types: Regurgitation, Stenosis, and Atresia. Which of the following is correct about Atresia?
Correct Answer: A
Rationale: Atresia is a congenital condition where a valve (or other structure) fails to develop properly, resulting in no opening (e.g., pulmonary atresia). B describes regurgitation, C describes stenosis, and D refers to prolapse, not atresia.
Question 5 of 5
Which of the following should the nurse include in the plan of care for a client following a coronary angiogram?
Correct Answer: B
Rationale: Encouraging fluids helps flush out the contrast dye used in a coronary angiogram, reducing kidney strain. Stress tests are post-recovery, vigorous exercise risks bleeding at the catheter site, and 4-6 weeks restriction is excessive.