ATI LPN
Cardiovascular Questions Questions
Question 1 of 5
Identify the outermost layer of the pericardial membranes.
Correct Answer: A
Rationale: The fibrous pericardium is the outermost layer of the pericardial membranes, providing a tough protective covering.
Question 2 of 5
The muscular layer of the blood vessel wall is the
Correct Answer: B
Rationale: The tunica media, composed primarily of smooth muscle, is responsible for regulating vessel diameter and controlling blood flow and pressure.
Question 3 of 5
In response to a decrease in blood pressure, heart rate will and the arterioles will
Correct Answer: D
Rationale: When blood pressure decreases, the body compensates by increasing heart rate to maintain cardiac output and constricting arterioles to increase peripheral resistance, thereby raising blood pressure.
Question 4 of 5
Identify the fetal structures that help circulation to by-pass the lungs.
Correct Answer: B
Rationale: The ductus arteriosus and foramen ovale shunt blood away from the fetal lungs.
Question 5 of 5
Which network of specialized cardiac muscle fibers provide a path for each cycle of cardiac excitation to progress through the heart?
Correct Answer: D
Rationale: The cardiac conduction system includes the sinoatrial node, atrioventricular node, bundle of His, and Purkinje fibers, orchestrating the sequence of electrical events leading to coordinated heart contractions.