The exchange of gases in the lungs occurs in the :-

Question

Options are

a) Bronchi

b) Alveoli

c) Trachea

d) Bronchioles

Answer 1

B)alveoli

the alveoli is the site of gas exchange in the lungs as they diffuse air into the capillaries

Answer 2

ANS: B) Alveoli

Exp: Through a process known as diffusion, the capillaries surrounding the alveoli will move CO2 from the bloodstream, across the alveolar membrane and into the alveoli to be removed during expiration. Inhaled oxygen will move from the alveoli, across the membrane and into the bloodstream to then be carried throughout the body.

Wrong ANS: Choices A, C and D are all wrong as their functions are in the movement of air in and out of the lungs, but not in the gas exchange itself.

Answer 3

The exchange of gases in the lungs occurs in the alveoli.

These are tiny, thin-walled air sacs at the end of the respiratory tree. They are surrounded by a network of capillaries, allowing for efficient gas exchange between the air in the alveoli and the blood in the capillaries.

Simple and go ahead students ...