What is one of the physiological responses to low air pressure?

The correct response highlights the increase in the secretion of erythropoietin as one of the physiological responses to low air pressure. When air pressure is low, such as at high altitudes, the amount of available oxygen decreases, leading to a condition known as hypoxia.

In response to low oxygen levels in the blood, the kidneys detect this change and increase the production of erythropoietin, a hormone that stimulates the bone marrow to produce more red blood cells. This increase in red blood cell production helps enhance oxygen-carrying capacity of the blood, allowing the body to better adapt to lower oxygen availability.

This physiological response is crucial for maintaining adequate oxygen supply to tissues and organs during conditions where oxygen levels are diminished. The body’s ability to adjust by producing more red blood cells is a vital mechanism for survival in environments with low air pressure.