Pulmonary circulation differs from systemic circulation
Pulmonary vasodilatation in hypoxia
Pulmonary vasoconstriction in hypoxia
Decreased blood volume during systole
Increased basal vasoconstrictor tone
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
Respiratory system