Notes in 111 LEC 13

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Published	11/08/2023	Arteries are {{c1::pressure reservoirs}}
Published	11/08/2023	why are arteries pressure reservoirs
Published	11/08/2023	Compliance – {{c1::vessel volume change per unit change in pressure}} Distensibility – {{c1::% of volume change per unit of change in pressure}}Low co…
Published	11/08/2023	Arterial resistance controls {{c1::blood flow}}- where blood goes is determined by {{c1::arterial system}} For branching arteries- Blood flow through …
Published	11/08/2023	Arterial caliber is determined by {{c1::smooth muscle contraction}} - Arteries and arterioles contain smooth muscle - {{c2::Regulation of smooth muscl…
Published	11/08/2023	{{c1::Sympathetic stimulation}} (example -- norepinephrine) → {{c3::smooth muscle contraction}} (vasoconstriction) → {{c5::less}} caliber → {{c7::less…
Published	11/08/2023	Veins are {{c1::volume reservoirs}}- Veins and venules have {{c1::smooth muscles}} that can control caliber - {{c1::basal contraction}} of venous smoo…
Published	11/08/2023	Veins and venules have {{c1::higher}} compliance than arteries and arterioles because they have {{c1::no elastin}} and a {{c1::thinner smooth muscle l…
Published	11/08/2023	final ventricular volume at end of diastole depends on {{c1::venous return}}More venous return → {{c1::More}} EDV → {{c1::more}} CO Less venous r…
Published	11/08/2023	Mean arterial pressure (MAP) – {{c1::Avg arterial pressure in systemic circulation}} equation = {{c1::⅓ systolic pressure + ⅔ diastolic pressure}}
Published	11/08/2023	- As blood flows through arterial system and capillaries → BP {{c1::“decays”}} - rate of decrease depends on {{c1::resistance in each segment of arter…
Published	11/08/2023	the vascular system {{c1::branches}} to reach every single tissue of bodyFlow along each section of vascular system is {{c1::constant}} because the sy…
Published	11/08/2023	Capillary walls are {{c1::single cell thick with small holes}} allowing {{c2::fluid and small molecules flow between capillary and interstitial space}…
Published	11/08/2023	Fluid goes from {{c1::high}} hydrostatic pressure to {{c1::low}} hydrostatic pressure. An {{c1::increase}} in hydrostatic pressure (P) {{c2::pushes fl…
Published	11/08/2023	Fluid goes from {{c1::hypoosmotic}} (less solute) to {{c1::hyperosmotic}} (high solute). An {{c1::increase}} in osmotic pressure (π) pulls fluid in
Published	11/08/2023	fluid not returned back into capillaries are {{c1::recovered by lymphatic system}} and returned through {{c2::cava vein}} the lympatic system has {{c1…
Published	11/08/2023	at the arteriole end of capillary tube - there is {{c1::more}} hydrostatic pressure inside the capillary than in the interstitial tissue ({{c1::higher…
Published	11/08/2023	At the venule end of capillary tube {{c1::Less}} hydrostatic pressure inside capillary than in interstitial tissue ({{c1::lower}} hydrostatic pressure…
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