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Mechanism of Breathing

The external ...

Question

The external intercostal muscles relax during inspiration.

A

False

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B

True

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Solution

The correct option is A False

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Q. Assertion :Inspiration occurs due to muscular relaxation. Reason: During inspiration, the diaphragm and external intercostal muscle contract simultaneously.

Q. During inspiration the external intercostal muscles ________________ and the ribs move___________________

Q. During inspiration the external intercostal muscles ________________ and the ribs move_______________.

Q. Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external intercostal muscles
(c) Pulmonary volume decreases
(d) Intra-pulmonary pressure increases

Q. When the external intercostal muscles are relaxed, the lungs are at

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