Vascular Compliance (Distensibility) & Its Imporatance in Arterial Pulsation & Venous Reservoir

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Vascular Distensibility:
The elastic nature of the vessels allows them to increase their volume with an increase in pressure. Distensibility is a fractional increase in volume for each millimeter of mercury rise in pressure. And compliance is a total increase with the rise in pressure. Compliance is more important in hemodynamics. Arteries are distensible, but veins… ohh boy… veins are far more distensible. Distensibility of arteries allow them accommodate extra blood during systole(), so smooth blood flow at tissue is maintained even during diastole. And very high distensibility of veins makes them the blood reservoir. When this blood is needed, the sympathetic stimulation increases the tone of the vessels. This shifts the blood into circulation. Inhibition of sympathetic activity helps store the blood.
Chapters:
00:00 Intro
00:21 Elastic Fibers
00:36 Distensibility
00:51 Compliance
00:59 Compliance vs Distensibility
02:13 Compliance of Arteries
02:40 Compliance of Veins
03:12 Importance in Arteries
04:12 Importance in Veins
05:05 Effect of Sympathetic Tone
06:36 Pressure Volume Curve
08:32 Summary
Dr Vipul Navadiya
Nonstop Neuron
Medical Animation
Medical Animation Videos
Physiology
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.

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