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