Hemodynamics, Dr. D. Penney




Table 5.03. Relative resistance to flow in the systemic vascular bed. It is different for the pulmonary vascular bed.

Structure ..... % of Total ..... Structure .... % of Total .....
Aorta 4% Venules 4%
Large arteries 5% Terminal veins 0.3%
Mean arterial Mean venous
Branches 10% Branches 0.7%
Terminal branches 6% Large veins 0.5%
Arterioles 41% Vena cava 1.5%
Capillaries 27%
Total: Arterial + capillary = 93% Total venous = 7%

Note: The % R in arterioles vs. capillaries, etc. shifts with vasomotion.




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