16. The most important respiratory stimulus for breathing in a healthy person is _______.?

Question

A) loss of oxygen in the tissues

B) increase in carbon dioxide

C) pH changes

D) all of the above are equally important

Answer 1

A

Answer 2

c

Answer 3

The primary drive for respiration is rising CO2 levels.  

This in turn leads to pH changes.

Hypoxemia is a relatively poor driver of respiration

Answer 4

D.

pH changes suggests that there is a change of concentration of certain molecules in the blood.

there also should be a point of "equilibrium" so to speak between the flow of oxygen and carbon dioxide (but not equal) and loss of oxygen in tissues will, of course, kill cells.

they are all incredibly important.