00:01
So the first thing that we have to get down on here is just the pulmonary and systemic circuits.
00:08
So i've drawn a really rough version of the heart here and so let's start on the right side of the heart.
00:14
If the blood is coming back from the body, we are traveling in a large vein.
00:18
We are traveling in a vein known as the vena cava.
00:21
There are actually two of them, one superior, one inferior, depending if you're coming from the top or the bottom of the body.
00:27
You will enter into the right atrium.
00:36
That is the first chamber of the heart.
00:40
Then you will pass through the av valve, the atrioventricular valve, into the ventricle, the right ventricle, because we're on the right side of the heart.
01:01
The right ventricle pumps out via the pulmonary artery.
01:06
There's actually two pulmonary arteries, one for each side.
01:18
And then you enter the capillaries in the lungs.
01:30
Once you pick up the oxygen, you return to the heart via the pulmonary vein, each lung via a pulmonary vein, into the left atrium of the heart.
01:52
Then you pass through the left av valve, atrioventricular valve, into the left ventricle, which is another heart chamber.
02:07
Then the left ventricle pumps out, out of the heart, through the biggest artery that you have, known as the aorta.
02:22
Then this will travel to your systemic capillaries...