Which of the following conditions would increase the rate at which the diffusion of a gas between the alveoli of - Biology - Body Fluids and Circulation

Question

Which of the following conditions would increase the rate at which
the diffusion of a gas between the alveoli of the lungs and the
blood within pulmonary capillaries occur?
One/More Cornet Answer(s)
A Increasing the partial pressure gradient of the gas
B Increasing the thickness of the respiratory or diffusion
membrane
C Decreasing the total surface area available for diffusion
D Decrease in thickness and increase in surface area of diffusion
membrane

Priyanka Sahu · Accepted Answer

Dear student,

The correct statements are: A and D
A Increasing the partial pressure gradient of the gas
D Decrease in thickness and increase in surface area of diffusion
membrane

Alveoli are microscopic air sacs They are the primary sites of
the exchange of gases Gas exchange also occurs in the lungs and
tissues by diffusion
Atmospheric air contains little CO2, but blood
flowing in pulmonary capillaries has a higher concentration of
CO2
CO2 diffuses from higher concentration in blood
across walls of alveolar capillaries to lower concentration in air
in alveoli
Blood coming into pulmonary capillaries is oxygen-poor and
alveolar air is oxygen-rich
Oxygen diffuses from higher concentration in alveoli across
walls of alveolar capillaries to lower concentration in blood

In order to promote the exchange of gases between blood and
air-filled alveoli, alveoli are thin-walled and densely equipped
with a network of blood vessels They have a balloon-like structure
for the exchange of gases that offers a maximum surface area for
gas exchange between blood and the air-filled alveoli

Regards