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Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:
- a)Expiratory reserve volume
- b)Residual volume
- c)Inspiratory reserve volume
- d)Tidal volume
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Lungs are made up of air-filled sacs, the alveoli. They do not collaps...
- The volume of air remaining in the lungs even after a forcible expiration is called residual volume.
- This residual volume prevents the lungs from collapsing.
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Lungs are made up of air-filled sacs, the alveoli. They do not collaps...
The volume of air remaining in the lungs even after a forcible expiration is called as residual volume. This residual volume will help to keep the alveoli open even after a forceful expiration i.e., it prevents the collapsing of alveoli even after forceful expiration. Thus, the correct answer is option B.
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Lungs are made up of air-filled sacs, the alveoli. They do not collaps...
The correct answer is option 'B', i.e., Residual volume.
Explanation:
The lungs are made up of air-filled sacs called alveoli. These alveoli are responsible for the exchange of gases between the body and the environment. During breathing, air enters the lungs through the trachea and bronchi and reaches the alveoli. The oxygen from the air diffuses into the bloodstream, and the carbon dioxide from the bloodstream diffuses into the alveoli to be expelled out of the body during exhalation.
The alveoli are surrounded by a network of elastic fibers and a thin layer of fluid. These elastic fibers help in keeping the alveoli inflated, and the fluid helps in reducing the surface tension. This combination of elastic fibers and fluid prevents the alveoli from collapsing during exhalation.
However, there is always some air left in the lungs, even after forceful exhalation. This residual air is called the residual volume. The residual volume is the amount of air that remains in the lungs after the maximum expiration. This volume of air helps to keep the lungs partially inflated and prevents the collapse of the alveoli.
Therefore, the correct answer is option 'B', i.e., Residual volume.
Explanation:
The lungs are made up of air-filled sacs called alveoli. These alveoli are responsible for the exchange of gases between the body and the environment. During breathing, air enters the lungs through the trachea and bronchi and reaches the alveoli. The oxygen from the air diffuses into the bloodstream, and the carbon dioxide from the bloodstream diffuses into the alveoli to be expelled out of the body during exhalation.
The alveoli are surrounded by a network of elastic fibers and a thin layer of fluid. These elastic fibers help in keeping the alveoli inflated, and the fluid helps in reducing the surface tension. This combination of elastic fibers and fluid prevents the alveoli from collapsing during exhalation.
However, there is always some air left in the lungs, even after forceful exhalation. This residual air is called the residual volume. The residual volume is the amount of air that remains in the lungs after the maximum expiration. This volume of air helps to keep the lungs partially inflated and prevents the collapse of the alveoli.
Therefore, the correct answer is option 'B', i.e., Residual volume.
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Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:a)Expiratory reserve volumeb)Residual volumec)Inspiratory reserve volumed)Tidal volumeCorrect answer is option 'B'. Can you explain this answer?
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