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1 vote
What causes exhalation?

a signal from the medulla to the mouth and nose
O a signal from the alveoli to the medulla
O a signal from the diaphragm to the medulla
O a signal from the medulla to the lungs

2 Answers

4 votes

Answer:

its a

Step-by-step explanation:

yw

User Jamie Cook
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A signal from the medulla to the mouth and nose
User Grzegorz Bokota
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