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Learning about…

Human Respiratory System

XI GradeSenior High School

Human Respiratory Tract Outline

• To understand about definition of respiratory system.

• To observe the organs that arrange human respiratory tract.

• To explore the mechanism of breathing.

• To know the disorder/disease in human respiratory tract.

SEE THIS VIDEOPLEASE…

^_^

What is 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.

You may be asking, what is the Respiratory system?

Respiratory Intro

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.

JH

Here is a overview picture of the Respiratory System.

Just go to the next slide to see it…

Picture Intro

MB

What are the components of Human Respiratory System?

Respiratory Overview Picture

Nasal Cavity

Nose

Mouth

Bronchus

Bronchiole

Alveolus

Diaphragm

Throat

(pharynx)

Windpipe (Trachea)Left lungs

Ribs

MB

In general

N-P-L-T-B2-Lu-As

Nares – Pharynx -Larynx - Trachea-Bronchi-Bronchiole- Lung-Alveolous 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.

MB

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

MB

The Nose and Mouth

When the air comes into your nose it getsfiltered 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.

MB

Nose and Mouth Picture

Nasal Cavity

Nostril

Oral CavityPharynx

Here is a picture of your nasal and oral cavity.

MB

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.

MB

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

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.MB

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

MB

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.

MB

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).

But we will go there later… MB

Alveoli and Bronchi Picture

Trachea

Bronchi Tubes

Bronchiole

Alveoli

MB

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.MB

Now we will head over to the alveoli and what

Happens when theair finally makes it down there.

The Alveoli and Capillary Network

MB

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

MB

TYPE s OF BREATHING

CHEST BREATHING

(among bone rib muscular)

INSPIRATION: The ribs to be sure that the muscle among bone chest cavity, chest cavity becomes larger for that cause the pressure in the chest cavity becomes smaller in comparison to the pressure external so that oxygen-rich air outside the entrance.

EXPIRATION : phase relaxation or muscle some of the ribs return to the opening position is followed by a decline in the ribs so that the chest cavity becomes smaller. Because of this, the pressure inside the chest cavity will become larger than the external pressure, so air in the chest cavity is rich in carbon dioxide out.

ABDOMINAL BREATHING

(includes the diaphragm muscle)

INSPIRATION : This phase of the diaphragm muscle contraction and the position become horizontal, chest cavity becomes larger, for that causes the pressure in the chest cavity becomes smaller in comparison to the pressure outside so that oxygen-rich air outside the entrance.

Expiratory : This phase is the phase diaphragm muscle relaxation or return to its original position that utilized by a decline in the ribs so that the chest cavity becomes smaller. As a result, the pressure inside the chest cavity becomes larger than outside pressure, so air in the chest cavity is rich in carbon dioxide out.

Diagram of Diaphragm

JH

DISORDER IN HUMAN RESPIRATORY SYSTEM

DIPTHERIA

Bronchogenic carcinoma

Asthma

Chronic bronchitis

Pneumoconiosis

Tuberculosis

TIME TO GROUP DISCUSSION

CONCLUSION