Download Alveoli

Human Respiratory System Diagram
Nasal
Passage
Title Page
Pharynx
Trachea
Bronchiole
Alveoli
Bronchi
Oxygen
Cell
Hi I am O ,you
can call
2
me oxygen, and I will be your guide today.
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
Nasal Passage
Where are we?
Here We Go!!!
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. JH
Picture Intro
Here is a overview picture of
the Respiratory System.
Nasal
Cavity
Respiratory Overview
Nose
Picture
Throat
(pharynx)
Mouth
Bronchus
Bronchiole
Alveolus
Diaphragm
Windpipe
(Trachea)
Left lungs
Ribs
Now we will begin our tour.
Welcome to…
Welcome
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 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 nose.
Nose and Mouth Picture
Nasal Cavity
Nostril
Oral Cavity
Pharynx
Here is a picture of your nasal and
oral cavity.
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.
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.
Red blood cell carrying Carbon dioxide
Chemicals
Chemical change is taking place in cell
Red blood cell carrying oxygen
Alveolus
Contiguous Basal Laminae (Membrane)
Capillary
Oxygen
Diffusion
Carbon Dioxide
Oxygen diffuses
through the
membrane into the
blood stream.
Carbon Dioxide
diffuses through the
membrane and
enters the alveolus.
Alveolus
Contiguous Basal Laminae (Membrane*)
Capillary
* A specialized thin layer of skin
that oxygen and carbon dioxide
can pass through.
Cool pictures
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Now we will look at the Diaphragm.
You might be wondering, what does the
Diaphragm do? The Diaphragm is an
important factor in breathing.
Diagram of Diaphragm
CO2
Air Passing over the mucus
membrane of the nasal
cavity is moistened,
warmed, and filtered
Inside the lungs the
Bronchi branch into
small tubes called
bronchioles
The Pharynx, or throat, is
located where passages
from the nose and mouth
came together.
Respiratory Overview Review
At the end of the
bronchioles are
bunches of alveoli,
air sacs, arranged like
grapes on a stem
If one lobe is injured or
diseased, the other lobes
may be able to function
normally
Air enters the
trachea, or wind pipe
which leads to and
from the lungs
The trachea divides into
two tubes called bronchi
Fun Facts
* At
rest, the body takes in and breathes out about 10 liters of air each minute.
* The right lung is slightly larger than the left.
* The highest recorded "sneeze speed" is 102 miles per hour.
* The surface area of the lungs is roughly the same size as a tennis court.
* The capillaries in the lungs would extend 994 miles if placed end to end.
* We lose half a liter of water a day through breathing. This is the water vapor
we see when we breathe onto glass.
* A person at rest usually breathes between 12 and 15 times a minute.
* The breathing rate is faster in children and women than in men.
Key Words
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Respiratory System- The group of organs in your body that are responsible for
taking in Oxygen and breathing out the Carbon Dioxide which is the waste product
of cellular respiration.
Oxygen-The gas that your body needs to work and function.
Carbon Dioxide- The waste product (gas) that is produced through respiration of
people and animals.
Nose/Nasal Cavity- Where Oxygen first enters your body. Tiny hairs help filter the
air and air is moistened and heated by your nose. Your Nose leads into your Nasal
Cavity.
Mouth/Oral Cavity- Oxygen/air can also enter through your Mouth but it is not
filtered. Your Mouth opens up into your Oral Cavity.
Sinus- A cavity in the bones of your skull that helps moisten and heat the air that
you breath.
Pharynx/Throat- Gathers air from your Nasal and Oral Cavities and passes it to
your Trachea.
Trachea/Windpipe- A tube like pathway that connects your throat to your Bronchi
Tubes and lungs. Air passes through it when it travels from the Pharynx to the
Bronchi Tubes.
Key Words Cont.
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Bronchi Tubes- Each tube (one per lung) splits up into many smaller tubes called
Bronchiole, like branches on a tree.
Bronchiole- Keep splitting up until they reach your Alveoli.
Respiratory Bronchiole- The air-tubes that are actually connected to the Alveoli.
Alveolar Duct- The final tube, which is part of the Alveoli, that leads to the airsacs.
Alveolar Sac- Where the chemical change takes place and where blood cells pick
up oxygen and drop off carbon dioxide.
Alveoli- Tiny air-sacs at the end of your Alveolar Duct. They fill up with Oxygen
and are surrounded by Capillaries.
Capillaries- Tiny blood streams (around one cell wide) that surround your Alveoli.
They take Oxygen out of our Lungs and replace it with Carbon Dioxide, which you
later breath out.
Diaphragm- The muscle membrane that helps you breath in and out by changing
the pressure in your chest cavity.