Mechanics of breathing Flashcards
1
Q
What happens to the intercostal muscles and ribs when we inhale
A
contracts which makes the rib move up and out
= larger chest cavity
2
Q
What happens to the diaphragm when we inhale
A
Contracts and moves downwards
= Larger chest cavity
3
Q
Pressure when we inhale
A
The pressure outside of our body is greater than the pressure inside
4
Q
What happens to the diaphragm when we exhale
A
Relaxes and moves upwards
5
Q
What happens to the intercostal muscles and ribs when we exhale
A
Intercostal muscles relaxes causing the ribs to move down and in
6
Q
What happens to chest cavity when we inhale
A
Increases
7
Q
What happens to chest cavity when we exhale
A
Decreases
8
Q
What happens to our lungs during exercise?
A
Expand by the pectorals and the sternocleidomastoid which enables us to take in more oxygen
