Emily's doctor thinks she should use a walking brace for a few months to see if it will help assist her when managing her physic
1 answer:
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Answer:
The correct answer is A
Explanation:
There are several respiratory centers, the main ones are in the medulla oblongata, also called spinal bulb, image attachment so you can observe better.
Image Reference:
https://en.wikipedia.org/wiki/Respiratory_center
