explain the process of breathing in man
Answers
Process of Breathing :-
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Thoracic Diaphragm :-
The diaphragm is the dome-shaped muscular organ which serves as the main muscle of respiration and plays an important role in the process of breathing.
Diaphragm separates the thoracic cavity from the abdominal cavity.
Thoracic cavity :-
Thoracic cavity, also known as chest cavity and is separated from the abdomenal cavity by the diaphragm.
It is surrounded by the ribs, the vertebral column and the sternum.
There are two openings of thoracic cavity - thoracic inlet and thoracic outlet.
During Inhale :-
Diaphragm contracts and flattens.
Volume of the thoracic cavity increased.
Pressure in the lungs decreased, and air rushes in.
During Exhale :-
Diaphragm relaxes.
Volume of the thoracic cavity decreased.
Pressure in the lungs increased, and air rushes out.
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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.