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Parts of the Respiratory System

When you brea...

Question

When you breathe in, your lungs contract, and when you breathe out, your lungs expand.

A

True

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B

False

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Solution

The correct option is B False

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Similar questions

Put your finger under your nose. Can you feel any air when you breathe out from your nose?

– Count how many times in one minute do you breathe in and breathe out.

– Jump 30 times. Did you feel breathless?

– Now again count how many times in one minute you breathed in and out.

– What was the difference in your count before and after jumping.

Q. Heart starts beating fast when you are scared but who tells heart that you are scared? Who tells the lungs that your body needs more oxygen which increases the breathing rate?

Q. All animals breathe in oxygen through lungs. True or False? Justify your answer.

Q. When we breathe in, our lungs ___.

Q. Try to hold your breath as long as you can. You might have observed great discomfort in the body. This is due to increase in

{C O}_{2}

levels in the lungs and the respiratory part of the brain forces you to breathe and sends painful contractions of the diaphragm and muscles in the ribs. Where does this

{C O}_{2}

come from in the first place?

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Parts of the Respiratory System

Standard VI Biology

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