ATI RN
Cardiovascular System Multiple Choice Questions Questions
Question 1 of 5
Platelets develop from these large cells
Correct Answer: B
Rationale: Megakaryocytes (B) produce platelets.
Question 2 of 5
An especially leaky type of capillary found in the liver and certain other tissues is called a
Correct Answer: C
Rationale: Sinusoid capillaries (C) in the liver are highly permeable with wide gaps, allowing large molecule exchange. Fenestrated (B) have pores, capillary beds (A) are networks, metarterioles (D) are precapillary.
Question 3 of 5
The hepatic portal system delivers blood from the digestive organs to the
Correct Answer: A
Rationale: The hepatic portal system routes nutrient-rich blood from the gut to the liver (A) for processing.
Question 4 of 5
Which component of the heart conduction system would have the slowest rate of firing?
Correct Answer: A
Rationale: The AV node (A) has the slowest intrinsic rate (~40-60 bpm) to delay impulses, allowing atrial contraction.
Question 5 of 5
The pulmonary trunk and aorta are derived from which primitive heart structure?
Correct Answer: D
Rationale: The truncus arteriosus (D) divides into the pulmonary trunk and aorta during development.