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Unformatted text preview: t > need more P to keep blood moving. The sources of peripheral resistance: a. Vessel diameter As the diameter ofvessel .l. ) more fluid is in contact with walllRt>Pt Sympathetic vasomotor fibers innervate muscle layer ) norepinephrine : vasoconstrictor F vasoconstriction >BP t B I ood*b orne vas o constri ct or s'. Sympathetic nervous system activated ) adrenal medulla ) epinephrine BP J > kidneys ) renin ) angiotensin II* Blood Volume I or Blood osmolartiy f ] hypothalamus ] vasopressin (ADH)" *also act together on kidney to cause the reabsorption of salt and water ) blood volume and BP f gL...
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This note was uploaded on 12/14/2011 for the course PHYS 345 taught by Professor Dr.abdirkin during the Spring '11 term at St. Thomas FL.
- Spring '11