SCIENCESCIENCENUTRITIONNUTRITION

PAULA CRESPO GONZÁLEZPAULA CRESPO GONZÁLEZ

NUTRITIONNUTRITION$ $ TheThe function of nutrition gives our cells all the function of nutrition gives our cells all the

energy they need to perform their life processes. energy they need to perform their life processes. Four body system carry Four body system carry

out the function of nutrition :out the function of nutrition :

** Digestive system: It is in charge of digestion Digestive system: It is in charge of digestion * * Respiratory system: It is in charge of breathing Respiratory system: It is in charge of breathing ** Circulatory system: It transports nutrients and Circulatory system: It transports nutrients and oxygenoxygen ** Excretory system: it transports them to taken Excretory system: it transports them to taken

outside the body through excretion.outside the body through excretion.

THE NUTRIENTS WE THE NUTRIENTS WE NEED TO LIVENEED TO LIVE

DIGESTION AND DIGESTIVE DIGESTION AND DIGESTIVE SYSTEMSYSTEM

$ $ Digestion is the process in which food changes into Digestion is the process in which food changes into nutrients. It takes place in the digestion system, nutrients. It takes place in the digestion system, which has two parts :which has two parts :

* * The disgetive tract .The disgetive tract . * * Glands .Glands .

Digestive systemDigestive system

Breathing and excretionBreathing and excretion$ $ Breathing is the process where the body takes in Breathing is the process where the body takes in

oxygen and releases carbon dioxide. Two oxygen and releases carbon dioxide. Two processes take place when we breathe :processes take place when we breathe :

* * Lung ventilation .Lung ventilation . * * Exchange of gases .Exchange of gases .

$$ the respiratory system carries out breathing . It the respiratory system carries out breathing . It consists of:consists of:

** Respiratory tract . Respiratory tract . * * Lungs .Lungs .

THE RESPIRATORY THE RESPIRATORY SYSTEMSYSTEM

THE EXCRETORY THE EXCRETORY SYSTEMSYSTEM

$ $ The excretory system is the elimination of the waste The excretory system is the elimination of the waste subtances collected in the blood that cells have produce. subtances collected in the blood that cells have produce. The excretory system is in charge of excretion and it is The excretory system is in charge of excretion and it is made up of :made up of :

* * Sweat glands. They are in the skinSweat glands. They are in the skin * * Urinary system. It is made up of:Urinary system. It is made up of: _ _ Kidneys Kidneys __ Unirary tract Unirary tract

THE URINARY THE URINARY SYSTEMSYSTEM

CIRCULATORY CIRCULATORY SYSTEMSYSTEM

$ $ Circulation is the transportation of blood, carrying Circulation is the transportation of blood, carrying nutrients and oxygen to all the cells .nutrients and oxygen to all the cells .

$ $ The circulatory system is made up of :The circulatory system is made up of : * * Heart.Heart. * * Blood.Blood. $ $ Blood vessels. There are three types of bloodBlood vessels. There are three types of blood

vessels:vessels: - - Arteries. Arteries. - - Veins.Veins. - - Capilares.Capilares.

THE CIRCULATORY THE CIRCULATORY SYSTEMSYSTEM

BLOODBLOOD$ $ Blood is a red liquid tissue made up of cells Blood is a red liquid tissue made up of cells

that fload in a nutritious liquid called that fload in a nutritious liquid called plasma.plasma.

$ $ blood cellsblood cells .. There are different types ofThere are different types of cells:cells:

* * Red blood cells.Red blood cells. * * white blood cells.white blood cells. * * Platelets.Platelets. $ $ blood plasma. It is a liquid made up of blood plasma. It is a liquid made up of

water with dissolved salts and nutrients.water with dissolved salts and nutrients.

BLOODBLOOD

THE HEARTTHE HEART$ $ It is a muscular organ located in the chest . It is It is a muscular organ located in the chest . It is

between the two lungs and slightly tilted to the between the two lungs and slightly tilted to the left.left.

$ $ Each half of the heart is divided into two cavities :Each half of the heart is divided into two cavities :

** Atrium Atrium * * VentricleVentricle ** Systole Systole * * Diastole Diastole

THE HEARTTHE HEART

THE THE ENDEND