Key points about Pulmonary Circulation

Blood volume in lungs= 450ml, 9% of total blood volume.
Blood flowing through Bronchial arteries- 1-2% of total Cardiac Output
Pulmonary Vascular resistance= 1/7 of systemic vascular resistance
Mean pressure= 15mmHg
Pulmonary arteries constrict in response to hypoxia.
Perfusion and Ventilation both are more in lower lobes
Ventilation/resistance is maximum at the apex.
Pulmonary veins are collapsed in upper and middle lobes, distended in lower lobes. This is because pressure in pulmonary veins of upper and middle lobes is less than atmospheric pressure. This causes the veins to collapse.

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Mr. Drosten's strange relationship to freedom of expression

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