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12 Cards in this Set
- Front
- Back
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Define "flow rate" verbally and mathematecally.
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The volume of fluid flowing per unit of time through a given cross section of a vessel.
F=ΔV/Δt |
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What are the reasons for lower average velocity of blood flow in the capillaries than in the arteries?
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There is only ONE reson:
-Flow continuity It has nothing to do with resistance. |
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Define "transmural pressure" verbally and mathematecally.
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The difference in pressure inside and outside a vessel.
p(TM)=p(i)-p(o) |
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Define "perfusion pressure" (driving pressure) verbally and mathematically.
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The difference between two transmural pressures.
p(p)=p(TM1)-p(TM2) |
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For which conditions is the Hagen-Poiseuille law valid?
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-Laminar flow
-Cylindrical vessels |
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How is resistance in series calculated?
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R(total)=R1+R2+R3
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How is parallel resistance calculated?
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1/R(total)=1/R1+1/R2+1/R3
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Viscosity?
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Fluid friction
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100mmHg=?
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13.3kPa
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How can one convert units from mmHg to Pascal?
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p=d*g*h
p=pressure d=density g=gravity h=height |
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What is the total power of the heart?
How many % of the BMR is this? |
1.4W
2% |
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How can maximal heart rate be calculted?
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220 beats/min-age in years
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