07 Intro Circulation - Introduction to the Cardiovascular...

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Introduction to the Cardiovascular System and Circulation 2nd Ed - Pages 414 - 419 & 452 - 459 Or 3rd Ed. - Pages 361 - 365 & 395 - 402
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Flow depends upon Pressure Gradient ( Δ P): Fig 14.1
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What determines pressure in the system? Resistance of vessels – Constriction increases P and R – Measured as T otal P eripheral R esistance To increase flow, increase pressure on arterial side but keep it low on venous side Activity of the pump - Heart – Volume pumped: C ardiac O utput in l/min – Ventricular push: raise arterial P – Ventricular pull: lower venous P
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Unformatted text preview: – Increase blood ejected per beat ( S troke V olume in mls/beat) – Increase H eart R ate – Thus increase C ardiac O utput = SV (ml/beat) x HR (beats/min) C entral V enous P ressure Moves blood from veins into right ventricle of heart Fig 14.5 Fig 14.6 Pressures in the system: Fig 14.3 & 9 Blood Pressure • Systolic • Diastolic • Average or Mean BP Fig 14.7 Compliance: Toolbox, page 404 and Fig 14.21 MAP ~ DP + 1/3 of (SP - DP) Fig 14.18 Receptors? Capillary Exchange: Fig 14.19 Lymphatic System: Fig 14.25...
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  • Spring '12
  • HIGGINS
  • cardiovascular system, Fig

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