Coronary Circulation - The Physiology | Coronary Blood Flow & Its Regulation | Blood Supply of Heart

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Coronary Circulation Physiology:
Normally the heart receives 4-5% of total cardiac output, which is about 225 ml/min. In the left ventricle, the blood flow decreases during systole, and most of the perfusion occurs during diastole. In the right ventricle, the flow is relatively smooth. Also during systole, the endocardium is compressed more than epicardium. This tends to decrease blood flow over there, but more blood vessels and more fall in resistance during diastole compensate for this negative impact. So overall blood flow in the inner half of the wall is almost equal to that in the outer half. Lack of oxygen or its increased demand increases the formation of adenosine, which in turn increases the blood flow. Nervous control mechanisms are there, but they are not so important, because local factors mostly predominate over them. So this was all about the coronary circulation.

Chapters:
00:00 Intro
00:16 Blood Supply of Heart
02:12 Coronary Blood Flow
02:49 Flow During Systole vs Diastole
04:19 Flow in Epicardium vs Endocardium
05:48 Control of Coronary Blood Flow
09:11 Special Features of Heart
10:57 Summary
12:08 Bonus Point

Dr Vipul Navadiya
Nonstop Neuron
Medical Animation
Medical Animation Videos
Physiology
Coronary Arteries
Blood Supply of Heart

DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.