Question

The phenomenon of normal breathing in a 10.
human being comprises
I. an active inspiratory and a passive
expiratory phase.
2. a passive inspiratory and an active
expiratory phase. 1
3. both active inspiratory and expiratory
phases.
4. both passive inspiratory and expiratory
phases.​

Answer 1

Answer:

option 3

Explanation:

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Answer 2

3. both active inspiratory and exploratory phases