1
Q
what is the bronchus
A
branch of trachea
2
Q
what is a bronchiole
A
branch of bronchus
3
Q
what is alveoli
A
where gas exchange happens
- large surface area
4
Q
what does the diaphragm do
A
moves up and down to bring air in and out
5
Q
what does the heart do
A
pumps blood
6
Q
what does the intercostal muscle do
A
allows ribs to expand
7
Q
function of the ribs
A
protects lungs
8
Q
what is the trachea
A
wind pipe
