What Event Causes the Pulmonic Valve to Open

Question

What event causes the pulmonic valve to open?
A) The P wave
B) An increase in the pressure within the right ventricle
C) "Lubb-dupp"
D) Contraction of the chordae tendineae

Accepted Answer

The pulmonic valve opens in response to an increase in pressure within the right ventricle, which occurs during ventricular systole. This allows for blood to be ejected from the right ventricle and into the pulmonary artery.