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18 votes
18 votes
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

User Ridgerunner
by
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2 Answers

18 votes
18 votes

Answer:

its a

Step-by-step explanation:

yw

User Nitori
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2.9k points
13 votes
13 votes
A signal from the medulla to the mouth and nose
User Finchsize
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