NUTRITION II

THE RESPIRATORY SYSTEM

The respiratory system is made up of the respiratory tract and the lungs.The respiratory trac connects the nose and the mouth to the lungs and consists of the nostrils,the pharynx,the larynx,the trachea and the bronchi.

MOVEMENT OF THE LUNGS

Air enters the lungs every time we breathe in.This is know as inhalation. Exhalation is the movement of air out of the lungs we breathe out.

HEALTHY BREATHING

To avoid diseases of the respiratory tract, the air we breathe must be clean.Here are some practical tips to keep your lung health:-Avoid places that are not well ventilated.--Do physical exercise.-Avoid pollution.

EXCRETION

The excretory system removes waste products from our cells in a process called excretion.The most important excretory organs are the kidneys,which are part of the urinary tract.

THIRST

Our kidneys regulate the amount of water and salts in our body and removes what we do not need. We should drink all the water our body asks for,especially when do physicalb exercise or the weather is hot, because we sweat more our body needs to replace the liquid lost.

BY :

Janeth Maroto Jurado andJose Maria Espinosa CEIP ALFARES6th level

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