Air moves into the lungs because a the gas pressure in the l

Air moves into the lungs because:

(a) the gas pressure in the lungs is less than outside pressure.

(b) the volume of the lungs decreases with inspiration.

(c) the thorax is muscular.

(d) contraction of the diaphragm decreases the volume of the pleural cavity.

(e) All of the above.

Solution

Answer (e)all the above

During inhalation the pressure in the lungs is less than outside pressure.