Question

E)The air around us has particles of dust, smoke and other items floating in it.
1)How does clean air enter in our nose while breathing. 2)Why our lungs placed inside a ribcage.
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Answer 1

Answer:

1) Little hairs inside your nose helps to filter the air you breathe in , and blocks the dirt and dust particles from getting into your lungs.

2) The ribcage is one of the body's best defenses against injury from impact which is made up of 12 ribs, so your lungs and other organs are also protected by ribcage.

Answer 2

Answer:-

E.

1.) How does clean air enter in our nose while breathing?

➡ ️We need fresh oxygen to breathe. We have many small hairs in our nose which are called Nostrils. Our nostrils help in purification of air. These will not allow the dust to enter our lungs, this dust seperated by nostrils come out in the form of sneeze.

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2.) Why are our lungs placed inside the ribcage?

➡️ Organs like lungs, heart, brain, etc. are very sensitive. Lungs are located near the ribcage because they need to be protected from any kinds of injuries inside the body.

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Know More:-

Q. Define Respiration.

➡️ The process in living organisms involving the production of energy, topically with the intake or oxygen and release of carbon dioxide from the oxidation of complex organic substances is termed as respiration.

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