Question

Which of the following is correct?



a)The diaphragm contracts--volume of chest cavity increases

b)The diaphragm contracts-- volume of chest cavity decreases

c)The diaphragm expands--volume of chest cavity increases

d)The diaphragm expands--volume of chest cavity decreases



plz answer guyss.......​

Answer 1

Answer:

b is the correct answer

Explanation:

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Answer 2

Answer:

a is the answer

Explanation:

when the diaphragm contracts --volume of chest cavity increases

_______

thoracic cavity will decreases