mechanism of breathing Flashcards
1
Q
what does the diaphragm do when you breath in
A
contract and falattens
2
Q
what do the intercorstal muscles do when you breath in
A
external intercorstal muscles contract
2
Q
what does this cuase
A
the ribcage moves up and out
3
Q
what does the movement of the ribcage cause
A
volume to increase and pressure to decrease
4
Q
what happens to the diaghram when you breath out
A
relaxes and becomes rounded
5
Q
what happens to the internal intercorstal muscles
A
relax
