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The respiratory system helps you
breath in and out, so oxygen (02)
can be pumped through your body
and carbon dioxide (CO2) can be
removed from the blood stream.
The respiratory system is made up
of many different organs.
Respiratory Intro
Nasal
Cavity
Respiratory Overview
Nose
Picture
Throat
(pharynx)
Mouth
Bronchus
Bronchiole
Alveoli
Diaphragm
Windpipe
(Trachea)
Left lungs
Ribs
The Nose and Mouth
This is where it all begins.
This is where the oxygen first
enters your body and also where
Carbon Dioxide leaves.
The Nose and Mouth
When the air comes into your nose it gets
filtered by tiny hairs called cilia and it is moistened
by the mucus that is in your nose.
Your sinuses also help out with your
Respiratory System. They help to moisten
and heat the air that you breath.
Air can also get into your body through your
mouth/oral cavity but air is not filtered as
much when it enters in through your mouth.
Nose and Mouth Picture
Nasal Cavity
Nostril
Oral Cavity
Pharynx
The Pharynx and Trachea
Next we will head down to your pharynx
(throat) and your trachea (windpipe).
This is where the air passes from your
nose to your bronchi tubes and lungs.
The Pharynx and Trachea
Mouth
Pharynx
(Throat)
Trachea
Your pharynx (throat) gathers air after it passes
through your nose and then the air is passed down to
your trachea (windpipe).
Your trachea is held open by “incomplete rings
of cartilage.” Without these rings your trachea
might close off and air would not be able to get
to and from your lungs.
Nasal Passage
Where are
We?
Tongue
Pharynx
We are here.
Bronchi Tubes
Alveoli (air-sacs)
Thin-walled blood vessels
called capillaries
The Trachea
is held open
by partial
rings of
cartilage.
Bronchioles pass
air to and from
your alveoli.
Very thin cells line the
alveoli so that O2 and
CO2 can pass in and
out of the blood.
The Bronchi Tubes and
Bronchiole Intro
Your trachea (windpipe) splits up into
two bronchi tubes. These two tubes keep
splitting up and form your bronchiole.
The Bronchi Tubes and
Bronchiole
These bronchi tubes split up, like
tree branches, and get smaller and smaller
inside your lungs.
The air flows past your bronchi tubes
and into your bronchiole. These tubes
keep getting smaller and smaller until they
finally end with small air sacs (called alveoli).
But we will go there later…
Alveoli and Bronchi Picture
Trachea
Bronchi Tubes
Bronchiole
Alveoli
Nasal Passage
Where are
We?
Tongue
Pharynx
Bronchi Tubes
Alveoli (air-sacs)
Thin-walled blood vessels
are here.
called We
capillaries
The Trachea
is held open
by partial
rings of
cartilage.
Bronchioles pass
air to and from
your alveoli.
Very thin cells line the
alveoli so that O2 and
CO2 can pass in and
out of the blood.
The Alveoli and Capillary
Network
Now we will head over to the
alveoli and what happens when the
air finally makes it down there.
The Alveoli and Capillary
Network
Your alveoli are tiny air sacs
that fill up with air/oxygen when you
breath in.
Your alveoli are surrounded by
many tiny blood vessels called
capillaries.
The walls of your alveoli (and capillaries) are
so thin that the oxygen or carbon dioxide can
pass through them, traveling right into, or
out of your blood stream.
Alveoli Picture
Here is a close
up picture of
your Alveoli
and a Capillary
surrounding it.
Capillary
Wall of
the air
sac
Carbon
Dioxide is
dropped off
Oxygen is
picked up
Red Blood
Cell
Nasal Passage
Where are
We?
Tongue
Pharynx
Bronchi Tubes
Alveoli (air-sacs)
Thin-walled blood vessels
called capillaries
We are here.
The Trachea
is held open
by partial
rings of
cartilage.
Bronchioles pass
air to and from
your alveoli.
Very thin cells line the
alveoli so that O2 and
CO2 can pass in and
out of the blood.
Alveolus
Bronchiole
Respiratory Bronchiole
Alveolar Duct
Alveolar Sac
Capillaries
Looking at the Alveoli
Lets take a closer
look shall we.
Cool pictures
http://www.youtube.com/watch?v=bwXvqSqAgKc
http://www.youtube.com/watch?v=sU_8juD3YzQ