Pulmonary

safaTerkawi

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2022-08-08

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Pulmonary.

Arterial mean pressure is about one-sixth systemic mean arterial pressure.
Blood flow/minute is similar to systemic blood flow/minute.
Vascular resistance is about 50 per cent that of systemic vascular resistance.
Vascular capacity is similar to systemic vascular capacity.
Arterial pressure increases by about 50 per cent when cardiac output rises by 50 per cent.

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safaTerkawi

2022-08-08

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A. True About 15 compared with 90 mmHg in the systemic circuit.

B. True Otherwise blood would accumulate in one or other bed.

C. False From (A) and (B) above, it is only about 17 per cent of systemic resistance.

D. False Its capacity is about one-third of systemic capacity.

E. False Pulmonary vascular resistance falls when cardiac output rises, due possibly to endothelial release of nitric oxide.

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