Which of the following is a mechanism by which human populations cope with high altitudes?
A) hypoxic ventilatory response (HVR)
B) vasodilation
C) pupil constriction
D) vasoconstriction

Question

Quizplus · Accepted Answer

The hypoxic ventilatory response (HVR) is a mechanism by which human populations cope with high altitudes. HVR is an increase in ventilation in response to low oxygen (hypoxia) levels. This response helps to increase the amount of oxygen absorbed by the lungs and delivered to the body's tissues, enabling individuals to cope with the reduced oxygen availability at high altitudes. Vasodilation (B) is the widening of blood vessels, while vasoconstriction (D) is the narrowing of blood vessels. These mechanisms play a role in regulating blood flow and blood pressure, but they are not specific to high-altitude adaptation. Pupil constriction (C) refers to the narrowing of the pupils in response to bright light, and is not related to high-altitude adaptation.

Which of the Following Is a Mechanism by Which Human