The following parts are involved in breathing process, except
A. mouth B. nostrils C. ribs D. diaphragm
Correct Answer: A
Explanation
The act of breathing has two stages – inhalation and exhalation - Inhalation – the intake of air into the lungs through expansion of chest volume. - Exhalation – the expulsion of air from the lungs through contraction of chest volume. Inhalation and exhalation involves muscles: - Rib muscles = the muscles between the ribs in the chest. - Diaphragm muscle