In the middle, you can see that little structure squeezing out, that's the left ventricle, pushing blood out through the aortic valve.

If you run water into the right ventricle from a tap (the left also works, but less spectacularly), you'll see that the ventricular valve tries to close against the incoming stream.

Squeeze the ventricle and a stream of water squirts out of the pulmonary artery.

The ventricular valves, called the tricuspid in the right ventricle and the mitral in the left, can be seen through the clear water opening and closing like parachutes as the ventricle is rhythmically squeezed.

And then we put a lead, which is a wire, in the right ventricle inside the heart, which does the electrogram, which is the signal voltage from inside the heart.

Ventricle in sentence

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