RESPIRITORY SYSTEM

This is the system that consists of very important organs that allows us to

breathe. It is responsible for the gas exchange as we breathe in oxygen and

breathe out carbon dioxide

The main organs

are:

• Nasal cavity

• Pharynx \• larynx• Trachea

Nasal cavityLook how big the

tongue is!!!

The nasal cavity is the beginning of the respiratory

system. Here, oxygen is breathed in through your

nose or mouth and carried through and passed on to the

next organ which is the pharynx .

Pharynx

Pharynx is just a fancy word for

throat. The air is taken from the

throat and passed on to the larynx.

larynx

Larynx is also just a fancy word for voice box. From your voice box the oxygen is carried to what

looks like a long pipe called your trachea.

Trachea

The trachea is like a long pipe made up

from small rings made out of very soft bone called cartilage . The trachea goes all the

way down through your chest and breaks into

two bronchi.

Bronchi

The bronchi are the pipes that pass on the air from the trachea to the bronchioles

which are even smaller pipes.

Bronchioles

These pipes carry the oxygen into little sacks where all the

magic happens, these sacks are

called alveoli sacks.

alveoli

The alveoli are responsible for the gas change, they change oxygen into carbon

dioxide. Then after the gas exchange, the process is reversed

Lungs

The lungs are divided into lobes, the right lung is bigger than the left

because the left lung has a 2 lobes due to the bump to make a safe

space for your heart, where as the right lung has 3 lobes. The lungs act in a sponge like way to absorb the carbon dioxide after the alveoli has released it. They also protect the bronchi and bronchioles from any

harm.

Some diseases that attack and harm this system:

bacterial pneumonia

Pulmonary embolism

Blood clots and floods your lungs.

Lung cancer

If you want you lungs to stay healthy and to look like these…

Don’t smoke or inhale anything that you

shouldn’t be inhaling. During the winter take multi vitamins so that you don’t get influenza and risk pneumonia.