science
what is the respiratory system ?
is a series of tubes that transfers air we breathe
when air enters your mouth or nose.
inhaling
empty the air into very thin-walled air sacs
alveoli
Describe the steps of how oxygen enters your body ? after we inhale
step 1:Trachea
step 2:lungs
step 3:bronchi
step 4:alveoli
are organs that fill with air when you inhale
lungs
trachea
what is a waste product the blood carries ?
carbon dixode
breathe out empty air
exhaling
they have braches like trees
bronchi
how is carbon dioxide pushed out ?
exhaling
a flat sheet of muscle
diaphragm
is the movement of particles
in what organelle of the cell does oxygen flow ?
mitochrondria
are tiny blood vessels that surround the tubes in our lungs.
capillary
carries out cellar processes
ATP