Question

RBCs of human beings who live in high altitude regions:
a) increase in number
b) decrease in number
c) decrease in size
d) increase in size.

Answer 1

Answer:

1 increase in number

Explanation:

high altitude decreases the binding of o2 with heamoglobin

so number of rbc increases

Answer 2

Red Blood Cells of human beings who live in high altitude regions increase in number. As a person moves to a higher altitude from a lower elevation, the air becomes thinner as we move up.

It is because as the height increases the partial pressure of the oxygen in the air decreases. As the pressure of air reduces in the lungs, the hemoglobin in the red blood cells decreases and the tissues become deprived of oxygen.

This phenomenon leads to the release of erythropoietin, a hormone from the kidneys that compels the bone marrow in the body to produce extra red blood cells.