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The diagram shows the valves inside the ...

The diagram shows the valves inside the heart.

Which valves are open or closed when the atria are relaxed and the ventricles contracted?

A

`{:("Valves open","Valves closed"),("3 and 4","1 and 2"):}`

B

`{:("Valves open","Valves closed"),("2 and 4","1 and 3"):}`

C

`{:("Valves open","Valves closed"),("2 and 3","1 and 4"):}`

D

`{:("Valves open","Valves closed"),("1 and 4","2 and 3"):}`

Text Solution

Verified by Experts

The correct Answer is:
C
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