During exhalation the ribcage moves
(a) upward and outward
(b) downwards and inwards
(c) from side to side
(d) does not move at all

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Solution

(b) downwards and inwards

During exhalation, the ribcage moves downwards and inwards because the intercostal muscles relax.

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Similar questions

During exhalation, the ribs
(i) move outwards
(ii) move downwards
(iii) move upwards
(iv) do not move at all

Tick the correct answer:

(a) In cockroaches, air enters the body through

(i) lungs

(iii) spiracles

(iv) skin

(b) During heavy exercise, we get cramps in the legs due to the accumulation of

(i) carbon dioxide

(iv) water

(i) 9-12

(ii) 15-18

(iii) 21-24

(iv) 30-33

(d) During exhalation, the ribs

(i) move outwards

(ii) move downwards

(iii) move upwards

(iv) do not move at all

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