The heart - 1 Differences between blood vessel types a...

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1. Differences between blood vessel types a. Walls of arteries are thickest b. Lumens of veins are larger c. Skeletal muscle “milks” blood in veins toward the heart d. Walls of capillaries 2. Movement of blood through vessels a. Most arterial blood is pumped by the heart b. Veins use the milking action of muscles to help move blood 3. Capillary beds a. consists of two types of vessels i. vascular shunt- directly connects an arteriol to a venule b. true capillaries- exchange vessels i. oxygen and nutrients cross to cells ii.carbon dioxide and metabolic waste products c. diffusion at capillary beds i. slide 11.29 1. the liquid slows down in capillary, the only thing that changes is internal pressure that is being generated against capillary wall a. pressure dramatically drops(almost to 0) because blood is spread through a large number of capillaries, then allowing stuff to move in and out 4. major arteries of systemic circulation a. 11.30 5. Major veins of systemic circulation a. 11.31
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This note was uploaded on 05/27/2008 for the course BIOLOGY 107 taught by Professor Dr.abbott during the Fall '08 term at UConn.

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The heart - 1 Differences between blood vessel types a...

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