Give reasons:-
i) Rings of cartilage are present in the trachea.
ii) Lungs always contain a residual volume of air.
Answers
Answered by
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Explanation:
(i) Rings of cartilage are present in trachea to prevent it from collapsing when less air is present in
To avoid it or prevent trachea from collapsing
anshuanshu8365:
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The lungs always contain a residual volume of air so that during breathing cycle there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released.Residual Volume is important because it prevents the lungs from collapsing
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Answer:
i- rings of cartilage are present in trachea it supports trachea from collapsing because due to inspiration and expiration our trachea expand and contract and if it does not have and support it will collapse
ii-lungs always contain residual volume because when we expire all the air is not able to go out and it gets stored in lungs as residual volume.
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