Mechanism of Breathing Inspiration and Expiration
Mechanism of Breathing Inspiration and Expiration
Mechanism of breathing
There are two main steps in breathing: INSPIRATION and EXPIRATION
Which of the following are correct ? (a) During Inspiration muscles attached to the ribs on their outer side contract. (b) During Expiration, muscles attached to the ribs on their inner side contract, and the diaphragm and the abdominal muscles relax . (c) During Inhaling movement of the diaphragm increases the volume of the air-tight chest cavity and creates pressure inside the lungs . | |||
| Right Option : D | |||
| View Explanation | |||
During inhaling, the intercostal muscles contract, the ribs are pushed ____________ and ____________ the diaphragm contracts and moves downward. | |||
| Right Option : B | |||
| View Explanation | |||
Expulsion of the air from the lungs is called ________________ . | |||
| Right Option : C | |||
| View Explanation | |||
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