The Vascular System. Blood vessels: structure and function of arteries, veins and capillaries.

This video outlines how blood vessels form the body's circulation and explains the direction of blood flow around it. The structures of different blood vessels are compared: arteries, veins and capillaries. The video also introduces the major blood vessels nearest the heart and their relationship to the body's organs. The role of blood vessels in transport, blood pressure and blood flow regulation, fluid balance, temperature regulation and the immune response are also briefly discussed.
00:29 The circulation
02:40 Blood vessel structure
04:44 Arteries and veins in situ
06:33 The major blood vessels
07:30 Artery branches from the aorta
09:06 Veins branching from the vena cavae
10:36 Blood vessel functions
13:13 More on blood vessel functions in other videos
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