Pulmonary circulation differs from systemic circulation
Correct Answer: Pulmonary vasoconstriction in hypoxia
Description: Hypoxic pulmonary vasoconstriction (HPV), also known as the Euler-Liljestrand mechanism, is a physiological phenomenon in which small pulmonary aeries constrict in the presence of alveolar hypoxia (low oxygen levels). Ref: guyton and hall textbook of medical physiology 12 edition page number: 354,355,356
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