Question

1. When the muscles of the diaphragm relax:
a. air rushes into the lungs
b. the volume of the thorax increases
c .the pressure in the thorax increases
d. the diaphragm is lowered
2. When you breathe in your ribs move:
a. down and in
b. up and out
c. up and in
d. down and out​

Answer 1

Answer:

1.b 2.a

Explanation:

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