Question

When the diaphragm and external intercostal muscles contract,
A) the volume of the thorax decreases.
B) the volume of the lungs decreases.
C) the volume of the thorax increases.
D) the lungs shrink.

Answer 1

The volume of thorax increase is the correct answer .

Answer 2

heya !!


here is your answer⬇️⬇️

Option B is the answer.

When we are breathing, the volume of lungs are decreased.

When we are exhaling the air, the volume of lungs are increased.

So, option B is the answer.

hope my answer helps you