explain the process of breathing in man
Answers
Answer:Breathing is the process of taking in oxygen-rich air and giving out carbon dioxide-rich air. Breathing in is 'inhalation' and breathing out is 'exhalation'. ... This happens because when air enters, the lungs expand and the ribs move outwards. Simultaneously, the diaphragm contracts and becomes flat.
Explanation:
Process of Breathing:-
Thoracic Diaphragm:-
The diaphragm is the dome-shaped muscular organ that serves as the main muscle of respiration and plays an important role in the process of breathing.
The diaphragm separates the thoracic cavity from the abdominal cavity.
Thoracic cavity:-
Thoracic cavity, also known as the chest cavity and is separated from the abdominal cavity by the diaphragm.
It is surrounded by the ribs, the vertebral column, and the sternum.
There are two openings of the thoracic cavity - thoracic inlet and thoracic outlet.
During Inhale:-
Diaphragm contracts and flattens.
The volume of the thoracic cavity increased.
Pressure in the lungs decreased, and air rushes in.
During Exhale:-
Diaphragm relaxes.
The volume of the thoracic cavity decreased.
Pressure in the lungs increased, and air rushes out.