Function of Alveoli
When we ________, ________
enters the body though the ______
and _______.
Air travels through the _______,
_________ and ___________
until it reaches the ________.
In the ________, there is now a
high _____________ of oxygen,
which __________ into the
_______.
______ blood _______ transport
___________ around the body
and bring ________ _________
waste back to the ________.
The returning blood now has a
________ ________ is removed
_____ concentration of ______, from the body when we _______.
which diffuses back into the air sac
where concentration is _______.
Some words are used
more than once:
alveoli
blood
body
Bronchioles
bronchi
CARBON
cells
CO2
concentration
diffuses
dioxide
EXHALE
high
inhale
LOWER
mouth
nose
oxygen
red
trachea