Title Page

Respiratory Intro

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. In other words, I am

responsible for

GAS EXCHANGE!!!

Where are we?

Nasal Passage

Bronchi Tubes

Alveoli (air-sacs)

Thin-walled blood vessels called capillaries

Very thin cells line the alveoli so that O2 and CO2 can pass in and out of the blood.

Bronchioles pass air to and from your alveoli.

The Trachea is held open by partial rings of cartilage.

Tongue

PharynxHere We Go!!!

JH

Respiratory Overview PictureNasal Cavity

Nose

Mouth

Bronchus

Bronchiole

Alveolus

Diaphragm

Throat

(pharynx)

Windpipe (Trachea)

Left lungs

Ribs

The Nose and MouthWhen 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 yourmouth/oral cavity but air is not filtered as

much when it enters in through your mouth.

Nose and Mouth

Nasal Cavity

Nostril

Oral CavityPharynx

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

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 ringsof cartilage.” Without these rings your trachea might close off and air would not be able to get

to and from your lungs.

Pharynx

(Throat)

Mouth

Trachea

Your trachea (windpipe) splits up into two bronchi tubes. These two tubes keep splitting up and form your bronchiole.

The Bronchi Tubes and Bronchiole Intro

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 tubesand into your bronchiole. These tubes

keep getting smaller and smaller until theyfinally end with small air sacs (called alveoli).

Alveoli and Bronchi

Trachea

Bronchi Tubes

Bronchiole

Alveoli

The Alveoli and Capillary Network

Your alveoli are tiny air sacsthat fill up with air/oxygen when you

breath in.

Your alveoli are surrounded bymany 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, orout of your blood stream.

Alveoli Picture

Here is a closeup picture ofyour Alveoli

and a Capillarysurrounding it.

Capillary

Red Blood Cell

Oxygen is picked up

Carbon Dioxide is dropped off

Wall of the air sac

Nasal Passage

Bronchi Tubes

Alveoli (air-sacs)

Thin-walled blood vessels called capillaries

Very thin cells line the alveoli so that O2 and CO2 can pass in and out of the blood.

Bronchioles pass air to and from your alveoli.

The Trachea is held open by partial rings of cartilage.

Tongue

Pharynx

Where are We?

We are here.

Diffusion

Oxygen

Carbon Dioxide

Membrane*

Capillary

* A specialized thin layer of skin that oxygen and carbon dioxide

can pass through.

Oxygen diffuses through the membrane into the blood stream. Carbon Dioxide diffuses through the membrane and enters the alveolus.

Cool pictures

So once I am in the alveoli, I enter the blood vessel and leave to go to the heart to get transported anywhere in the body that needs me!!

Diagram of Diaphragm

Carbon Dioxide leaves the body the way oxygen entered the body…

Capillaries

Alveoli

Bronchioles

Bronchi tubes

Trachea

Pharynx

Nose or Mouth

Outside!!!

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 165 km per hour. * The surface area of the lungs is roughly the same size as a tennis court. * The capillaries in the lungs would extend 1,600 kilometers 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.