Actions Of Muscles In Respiratory Flashcards
1
Q
What does the diaphragm muscle do
A
Flattens lower the floor of the thoracic cavity to increase volume and decrease pressure
2
Q
What does external intercostal muscles do
A
Elevates the rib cage, spreading the ribs, assisting inspiration
3
Q
What does the internal intercostal muscles do
A
Depresses the rib cage, pulls ribs closer together, assisting expiration
