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RESPIRATORY SYSTEM

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el sistema respiratorio. 4º de primaria.

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RESPIRATORY SYSTEM

el sistema respiratorio. 4º de primaria.

Irene VIQUE RUBIO
1

mouth dioxide breathe oxygen lungs carbon nose organs

RESPIRATORY SYSTEM

The respiratory system is made up of a group of organs that help us . We breathe in and breathe out . It starts from your and and ends in your . The respiratory system consists of the following .

2

mucous nose mouth cavity nasal

THE NOSE

Air enters through the and the . Inside the nose is a passageway called the . It also has glands that secrete mucus .

3

air babies breathe respiratory grows older

THE MOUTH

The mouth is a very important part of the system for . This is because they have not yet learned how to through their nose . However , as a person , the nose becomes the main passage of .

4

cavity cavity oral swallow epiglottis nasal larynx

THE PHARYNX

The pharynx connects the and the with the and the oesophagus . It is , therefore , an important part of both the respiratory and digestive systems . The closes the larynx when you .

5

cords voice cords vocal vocal sound

THE LARYNX

The larynx is responsible for generation . It has the .

When you want to make a , your nervous system sends signals to these .

6

windpipe bronchi palm neck cartilage rings

THE TRACHEA

The trachea is also called the , the trachea is composed of . You can feel these rings when you run your over the front of your . It branches into two airways called .

7

bronchi left bacteria lower coughing right mucus

BRONCHI

You have two . One bronchus goes to your lung and the other goes to your lung . When you have a respiratory tract infection , your bronchi produce a lot of . The stick to the mucus and you expel them through

8

respiratory elastic lungs system oxygen sacs clean membranous carbon gas out circulatory dioxide in alveoli tree

LUNGS

The lungs are at the end of the . They are organs that expand when air goes and contract when air goes . Their main function is to facilitate exchange . Deoxygenated blood ( blood without oxygen ) from your organs goes to the for removal of and for absorption of oxygen . Because of the lungs , blood that enters the for distribution to the rest of the body is and contains a lot of . This is made possible by small called " " .

9

relaxes contracts strong

THE DIAPHRAGM

The diaphragm is a muscle below the lungs which when we breathe and when we breathe out