They throw open that aortic semilunar valve and send us out of the left ventricle to the aorta. This is the arch that goes up above the heart, anyone going to the places above (i.e. head and arms and left ear lobe) takes an exit, and then everyone else continues down around to the rest of the body. We're off to deliver the oxygen we picked up in the lungs to all the parts of the body.
This concludes the field trip around the heart as we're now back out to the body. See you back over in the right atrium in a little while?
