Why do pulmonary blood vessels constrict in hypoxia whereas
KARAN GUPTA
Why do pulmonary blood vessels constrict in hypoxia whereas blood vessels of rest of the body dilate?
i●●●●t h●●●●●n and 2 other likes this2 shares
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M●●●●●●d S●●d
M●●●●●●d S●●d General Medicine
According to Ganong physiology pulmonary blood vessels contain oxygen sensitive potassium channels like the one present in carotid bodies,potassium depolarization lead to increase calcium permeability which causes constriction,while systemic blood vessels contain ATP sensitive potassium channels which hyperpolarizes in response to hypoxia,hyperpolarization lead to vasodilation
Dec 4, 2018Like1
K●●●N G●●●A
K●●●N G●●●A General Medicine
How does this help human body?
Jan 2, 2019Like
M●●●●●●d S●●d
M●●●●●●d S●●d General Medicine
By causing vasoconstriction in pulmonary vessels blood diverge to those alveoli where oxygen is higher in concentration
Jan 2, 2019Like1