00:01
This question asks, where are one -way valves in the circulatory system located? our answer choices are arteries, capillaries, veins, and white blood cells.
00:10
So let's eliminate white blood cells right off the bat because white blood cells will not contain valves.
00:15
When we're talking about valves, we should be thinking straight to some sort of blood vessel.
00:20
So valves equals blood vessel.
00:24
Now, as we know, white blood cells are not going to be a type of blood vessel per se because they will actually be in the blood vessels.
00:31
As they will be carried with the red blood cells and the plasma and the platelets and the rest of the blood components through the liquid blood as we know it.
00:41
So the white blood cells will not be found, will not have valves because they themselves are found in the blood vessel.
00:49
So choice of these eliminated.
00:52
And now we have arteries, capillaries, and veins.
00:54
So we can eliminate capillaries because these are going to be extremely thin.
00:58
And they will not have any valves in them because they really don't need them.
01:04
In capillaries, this is where we see our close contact, so this is close contact with cells.
01:15
And this is where we see oxygen diffusing, so we can actually say exchange of gases and nutrients and other basically solvents in that, and solutes in that blood.
01:31
So we will not see one -way valves in the capillaries.
01:34
And then we have arteries and veins...