EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When the food is spoiled
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To breathe in
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To breathe out
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To throw away old food
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Detailed explanation-1: -Expiration involves gases leaving the lungs. During inspiration, the diaphragm and intercostal muscles contract allowing air to enter the lungs. During expiration, the inspiration muscles relax forcing gases to flow out of the lungs.
Detailed explanation-2: -Exhalation: When you breathe out, or exhale, your diaphragm relaxes and moves up into your chest cavity. As the space in your chest cavity gets smaller, air rich in carbon dioxide is forced out of your lungs and windpipe, and then out your nose or mouth.
Detailed explanation-3: -The process of expelling out carbon dioxide-rich air is called expiration. During expiration, the ribs moved downwards and inwards and the diaphragm relaxes and moves upwards. This leads to a decrease in the volume of the lungs.
Detailed explanation-4: -Exhalation (or expiration) is the flow of the breath out of an organism. In animals, it is the movement of air from the lungs out of the airways, to the external environment during breathing.