Question

(d) What happens during the process of breathing in
External intercostal muscles
Diaphragm
(i)
Contracts
Arches
Contracts
Flattens
(iii)
Relaxes
Arches
(iv)
Relaxes
Flattens​

Answer 1

i)

Contracts

Arches

Contracts

Flattens

is correct option

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