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Transcript
Follow an OXYGEN MOLECULE
through the Human Respiratory
System
Hi I am O2 ,you can call
me oxygen, and I will be your guide today.
I advise you keep all feet
and hands inside the ride at all times.
Oxygen Cell
You may be asking, what is the
Respiratory system? Well, the
Respiratory system is the system that
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. You must remember that the
Respiratory system is made up of
many different organs.
Respiratory Intro
JH
Nasal Passage
Where are we?
Tongue
Here We Go!!!
Pharynx
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. JH
Picture Intro
Here is a overview picture of
the Respiratory System.
Just go to the next slide to see
it.
MB
Respiratory Overview
Picture
Nasal
Cavity
Throat
Nose
(pharynx)
Mouth
Bronchus
Bronchiole
Alveolus
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.
MB
The Nose and Mouth
When the air comes into your nose it gets
filtered by tiny hairs 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
Here is a picture of your nasal and
oral cavity.
MB
Where
are We?
Nasal Passage
We are here.
Tongue
Pharynx
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 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.
MB
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.
MB
Where
are We?
Nasal Passage
Tongue
Pharynx
We are here.
Bronchi Tubes
Alveoli (air-sacs)
Thin-walled blood vessels
called capillaries
MB
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…
MB
Alveoli and Bronchi Picture
Trachea
Bronchi Tubes
Bronchiole
Alveoli
MB
Where
are We?
Nasal Passage
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.
MB
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
MB
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.