Give suitable explanations for the following:

Breathing through the nose is said to be healthier than through the mouth.

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Solution

Air that is breathed directly through the mouth into the lungs is not filtered.
Breathing through the nose filters the air before it enters the body.
The hairs inside nostrils filter any foreign particle in the air and it only lets the clean air pass through.
The mucus of the nostril collects potential contaminants where they are destroyed by nasal enzymes before they can enter the body and cause harm or make the body sick.
So, Breathing through the nose is said to be healthier than through the mouth.

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Q. Give suitable explanations for the following:
(a) Breathing through the nose is said to be healthier than through the mouth.
(b) Why does gaseous exchange continue in the lungs even during expiration?
(c) Why does a person feel breathlessness at higher altitudes?
(d) Why do you shiver and why do your teeth chatter when it is very cold in winter?

Q. Short / long answer type questions.
Breathing through nose is healthier than breathing by mouth. Why?

Q. Give suitable explanation for the following:

(i) One should breathe by nose and never by mouth.

They started playing and at the end of the game, all three of them were panting and breathing heavily. Sam noticed that John was breathing through his mouth so he advised him to breath through nose and not through mouth.

To this Kenneth said ' how does it matter? we will be inhaling the same air whether we breathe through nose or through mouth'.

Sam gave a reasonable explanation to make Kenneth and John understand that they should breathe through our nose and not through our mouth.

What was explanation given by Sam?

Q. Three friends went to the park.

To this Kenneth said ' how does it matter? we will be inhaling the same air whether we breathe through nose or through mouth'.

Sam gave a reasonable explanation to make Kenneth and John understand that they should breathe through our nose and not through our mouth.

What was explanation given by Sam?

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Nasal Cavity

Standard IV Science

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Give suitable explanations for the following:​ Breathing through the nose is said to be healthier than through the mouth.​

Give suitable explanations for the following:

Breathing through the nose is said to be healthier than through the mouth.