Why is there more resistance in some blood vessels than others?
How does the body use the concepts of vasodilation and vasoconstriction to regulate Blood flow?
I cover that (and more) in this video.
What’s In The Video
This video was in response to a question asked by one of the students in my Anatomy & Physiology Academy. However, I thought it would be useful for you to, so I decided to include it here on this website.
It’s a simple concept and I use the idea of water flowing through a hose as an analogy to help you understand. It’s quite simple. Here are the main points:
- If peripheral resistance increases, blood flow decreases
- The diameter of the blood vessel is inversely proportional to the amount of resistance
- If a blood vessel gets clogged, that increases resistance
- Vasoconstriction increases peripheral resistance
- Vasodilation decreases peripheral resistance
- The body uses these processes to make sure that blood goes to the right place at the right time
So I hope that helps you understand the concepts of peripheral resistance and blood flow a little better. There’s much more