00:01
Hello everyone, so in this question we are here asked to explain the changes in blood pressure that occur as the blood moves through the blood vessel.
00:14
Also to define vasoconstriction and vasodilation and how this affect the flow.
00:27
So as the blood moves through blood vessels, several changes in the blood pressure occur due to the properties of the blood vessels.
00:44
So the blood vessels include arteries, arterioles, veins etc are blood vessels.
00:58
So we will see in arteries, they are the thick walled elastic vessels.
01:08
So these arteries receive blood directly from heart.
01:20
So as the heart contract, so in the case of heart contract that is in the systole as well as the heart expands that is in the case of diastole, these elastic nature of these arteries will help them to expand and store this pressure.
01:44
So when the heart relaxes, the stored energy in the arterial wall will help to maintain the blood flow and keeps the blood pressure relatively constant.
01:54
Now coming to the arterioles, so these arterioles are smaller branches of arteries.
02:05
Smaller branches of arteries and they also play a very crucial role in controlling the blood pressure and blood distribution...