00:02
When it comes to this cardiac cycle, this is a cycle that happens within a fraction of a second.
00:07
So it's something that just naturally happens.
00:09
It's involuntary involving the heart and the cardiac muscles.
00:13
So during the cardiac cycle, we have three different stages that we can identify this going into.
00:18
So the first stage is what we know as the atrial systole.
00:22
So this is where both the atria contract forcing blood into the ventricle.
00:28
So it's going from the atria and forcing that.
00:32
Blood to shoot through into the ventricles.
00:36
We also have the ventricular system.
00:39
So this is where both the ventricles are going to contract together, right when contraction happens within the muscle, it's shortened.
00:45
So it's contracting and it forces of blood through the pulmonary and systemic circuits.
00:51
So again, this is just a fraction of a second that takes place with this ventricle system as well.
00:56
This is stolic pressure is measured here within the ventricular system...