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6 Cards in this Set
- Front
- Back
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blood flow in the pulmonary and systemic circuit is...
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EQUAL (5000ml/min)
despite great difference in pressure |
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why blood flow is the same in systemic and pulmonary circuit despite low pressure in the latter?
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LOW VASCULAR RESISTANCE
good to have a low blood pressure in pulmonary vessels |
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patient with COPD have trouble laying horizontally...why? supine position??
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horizontal: decrease in area of O2 diffusion
supine: decrease mobility of the diaphragm |
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pulmonary v.s. systemic vessels (structural)
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pulmonary vessels:
1. thinner walls and elastic with diminished tendency to contract |
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pulmonary v.s. systemic vessels (in response to hypoxia)
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pulmonary: constrict in response to local hypoxia
systemic: dilate to bring more O2 to tissue |
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pulmonary v.s. systemic vessels (in response to pressure)
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pulmonary: DILATE in response to increasing intraluminal pressure and cardiac output
systemic: CONSTRICT |
