s14 - Circulation Circulation Circulation Circulation No...

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Unformatted text preview: Circulation Circulation Circulation Circulation No circulatory system in early multicellular animals Circulation Circulation No circulatory system in early multicellular animals Single cells or flat sheet of cells Circulation Circulation No circulatory system in early multicellular animals Single cells or flat sheet of cells Exchange with environment is via diffusion Circulation Circulation Single cells & flat, multicellular organisms: diffusion Circulation Circulation Single cells & flat, multicellular organisms: diffusion Thicker, multicellular organisms: circulatory system Circulation Circulation Single cells & flat, multicellular organisms: diffusion Thicker, multicellular organisms: circulatory system Must maintain appropriate perfusion of tissues/organs Circulation Circulation Single cells & flat, multicellular organisms: diffusion Thicker, multicellular organisms: circulatory system Must maintain appropriate perfusion of tissues/organs Some Examples: open vs. closed Circulation Circulation Single cells & flat, multicellular organisms: diffusion Thicker, multicellular organisms: circulatory system Must maintain appropriate perfusion of tissues/organs Some Examples: open vs. closed Circulation Circulation Single cells & flat, multicellular organisms: diffusion Thicker, multicellular organisms: circulatory system Must maintain appropriate perfusion of tissues/organs Some Examples: the evolution of the vertebrate heart Circulation Circulation The structure of vertebrate blood vessels: Circulation Circulation The structure of vertebrate blood vessels: Vary in extent of vascular smooth muscle Circulation Circulation The structure of vertebrate blood vessels: Vary in extent of vascular smooth muscle Circulation Circulation The structure of vertebrate blood vessels: Prevention of back flow in veins Circulation Circulation Flow and Pressure in Arteries, Veins, and Capillaries: Circulation Circulation Control of flow and pressure: Circulation Circulation Control of flow and pressure: Centralcardiac output Circulation Circulation Control of flow and pressure: Centralcardiac output Stroke vol (SV) x cardiac rate (R) = CO Circulation Circulation Control of flow and pressure: Centralcardiac output Stroke vol (SV) x cardiac rate (R) = CO Either may be altered to change CO Circulation Circulation Control of flow and pressure: Centralcardiac output Stroke vol (SV) x cardiac rate (R) = CO Either may be altered to change CO Peripheralvascular resistance Circulation...
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s14 - Circulation Circulation Circulation Circulation No...

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