NUTRITION

SOFÍA NUÑEZand

LUCÍA ORTEGA

BY

THE DIGESTIVE SYSTEM

The digestive system transforms food into nutrients .

It has two parts The digestive tract ,the pharynx , the

oesophagus , the stomach ,the small intestine and the large intestine

The digestive glands , salivari glands the liver and the pancreas.

A PHOTO OF THE DIGESTIVE SYSTEM

THE RESPIRATORY SYSTEM

The respiratory system is in charge of breathing .

Makes two movements

First inhale air and it goes into the lungs

Then exhale air seding it out of the lungs

THE EXCRETORY SYSTEM

Filters waste substances from the blood.

It removes then from the body though excretion.

It is made up of Sweat glands The urinary system

The excretory system

THE CIRCULATORY SYSTEM Transport nutrients and oxygen to

our cells. It is made up of The heart The blood There are three types of blood

vessels : The capillaries The veins The arteries

The circulatory system

THE BLOODIs a red liquid tissue made up of cells that float in a liquid called plasma. It has three parts:o Red blood cells o White blood cellsoPlatelets

THE HEART Uses rhythmic systole and diastole

movements to pump the blood around the body.

HUMAN CIRCULATION.

Is closed and double Is closed,in mamals the heart septum

separates the two halves. Is double. The blood follows two

routes Pulmonary circulation Systemic circulation

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