Respiratory System Flashcards
1
Q
Gas exchange occurs at what level of the respiratory system
A
alveoli
2
Q
what is the primary muscle for respiration
A
diaphragm
3
Q
what type of process is breathing
A
both voluntary and involuntary
4
Q
describe how inspiration and expiration work?
A
inspiration: diaphragm moves down, chest walls expand, chest cavity enlarges creating a vacuum and air rushes in to fill the vacuum
expiration: diaphragm releases and moves up, chest wall moves in and air is squeezed out
5
Q
What part of the brain controls respiration?
A
the medula
6
Q
what gas in the blood stream stimulates us to breathe?
A
CO2
