1 - Lungs Flashcards
1
Q
trachea and bronchi
A
allow air to pass in and out of lungs
2
Q
rings of cartilage
A
to support trachea and bronchi, keeping them open
3
Q
alveoli
A
gas exchange occurs here. oxygen diffuses from the alveoli into the blood and carbon dioxide diffuses from the blood into the alveoli
4
Q
ribs
A
protect the lungs and heart
5
Q
diaphragm and intercostal muscles
A
control breathing. when they contract the lungs inflate and when they relax the lungs deflate
6
Q
cilia and mucus in the trachea and bronchi
A
mucus is sticky and traps dust and bacteria. the cilia beat and push mucus upwards to the throat. together they help protect the lungs from becoming damaged.
