QuestionSBA
QuestionChoice
This is incorrect. Both aortic and pulmonary valves close during S2.
10027513
c
Pulmonary only
QuestionChoice
This is incorrect. The tricuspid valve closes during S1 along with the mitral valve. Both aortic and pulmonary valves close during S2.
10027514
d
Tricuspid only
QuestionChoice
This is incorrect. The mitral valve closes during S1 along with the tricuspid valve. Both aortic and pulmonary valves close during S2.
10027515
e
Mitral only
QuestionChoice
This is the correct answer. During S2 the ventricles relax and the pressure in the aorta and pulmonary artery exceeds the ventricular pressure. Both valves close, however the aortic will close slightly before the pulmonary valve.
10027511
a
Aortic and pulmonary
QuestionChoice
This is incorrect. Both aortic and pulmonary valves close during S2.
10027512
b
Aortic only
Concept
Chapter
2693
4231
Blood flow through the heart
Topic
159
Cardiovascular physiology
17900
An 80 year old female attends her GP surgery for a routine review. The clinician auscultates the heart, and notes the first heart sound (S1) and second heart sounds (S2), with no murmurs.

Which of the following heart valves closes during the second heart sound (S2)?
a