ATI LPN
Cardiovascular Disease Questions Questions
Question 1 of 5
Identify the muscular ridges that are found on the anterior wall of the right atrium and extend into the auricles.
Correct Answer: A
Rationale: Pectinate muscles are ridges in the right atrium and auricles.
Question 2 of 5
Precapillary sphincters are located in venules.
Correct Answer: B
Rationale: Precapillary sphincters are in arterioles, regulating blood entry into capillaries, not venules.
Question 3 of 5
The left atrioventricular valve is also called:
Correct Answer: D
Rationale: The left AV valve is known as both the mitral and bicuspid valve.
Question 4 of 5
Chordae tendineae are associated with which structure(s)?
Correct Answer: D
Rationale: Chordae tendineae are fibrous cords that connect the papillary muscles to the atrioventricular valve leaflets, supporting both the mitral and tricuspid valves.
Question 5 of 5
The first heart sound heard, or the 'lub' sound, is caused by the:
Correct Answer: A
Rationale: The first heart sound is caused by the closure of the AV valves during ventricular contraction.