Nutrition Paula

SCIENCENUTRITIONPAULA CRESPO GONZÁLEZ

NUTRITION$ The function of nutrition gives our cells all the energy they need to perform their life processes. Four body system carry out the function of nutrition : * Digestive system: It is in charge of digestion * Respiratory system: It is in charge of breathing * Circulatory system: It transports nutrients and oxygen * Excretory system: it transports them to taken

THE NUTRIENTS WE NEED TO LIVE

DIGESTION AND DIGESTIVE SYSTEM$ Digestion is the process in which food changes into nutrients. It takes place in the digestion system, which has two parts : * The disgetive tract . * Glands .

Digestive system

Breathing and excretion$ Breathing is the process where the body takes in oxygen and releases carbon dioxide. Two processes take place when we breathe : * Lung ventilation . * Exchange of gases .$ the respiratory system carries out breathing . It consists of: * Respiratory tract . * Lungs .

THE RESPIRATORY SYSTEM

THE EXCRETORY SYSTEM$ The excretory system is the elimination of the waste subtances collected in the blood that cells have produce. The excretory system is in charge of excretion and it is made up of : * Sweat glands. They are in the skin * Urinary system. It is made up of: _ Kidneys _ Unirary tract

THE URINARY SYSTEM

CIRCULATORY SYSTEM$ Circulation is the transportation of blood, carrying nutrients and oxygen to all the cells .$ The circulatory system is made up of : * Heart. * Blood. $ Blood vessels. There are three types of blood vessels: - Arteries. - Veins. - Capilares.

THE CIRCULATORY SYSTEM

BLOOD$ Blood is a red liquid tissue made up of cells that fload in a nutritious liquid called plasma. $ blood cells . There are different types of cells: * Red blood cells. * white blood cells. * Platelets. $ blood plasma. It is a liquid made up of water with dissolved salts and nutrients.

THE HEART$ It is a muscular organ located in the chest . It is between the two lungs and slightly tilted to the left.$ Each half of the heart is divided into two cavities : * Atrium * Ventricle * Systole * Diastole

THE HEART

THEEND

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Nutrition Paula

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