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Components of Respiratory System in Humans

Write one wor...

Question

Write one word for the following.

1. The intake of air rich in oxygen ....................

2. Process of releasing energy by breakdown of food ....................

3. Air holes in insects ....................

4. Another name for the chest ....................

5. Dome-shaped muscle in the chest cavity ....................

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Solution

Inhalation

Respiration

Spiracles

Thorax

Diaphragm

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Q. Which of the following maintains the volume of air in the chest cavity during breathing?

Q. What happens during the process of inhalation?
1. Size of the chest cavity increases.
2. Size of the chest cavity reduces.
3. Diaphragm moves upwards.
4. Diaphragm moves downwards.

Q. Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction- upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.
(i) The air tubes of insects.
(ii) Skeleton structures surrounding chest cavity.
(iii) Muscular floor of chest cavity.
(iv) Tiny pores on the surface of leaf.
(v) Small openings on the sides of the body of an insect.
(vi) The respiratory organs of human beings.
(vii) The openings through which we inhale.
(viii) An anaerobic organism.
(ix) An organism with tracheal system.

Q. Which muscular part of the body present in the chest cavity helps air to be breathed in and out?

The intake of air which is rich in oxygen is known as _____________ .

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Components of Respiratory System in Humans

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