Unit 3 nutrtion tomas s

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  • 1. By Tomas Nieto
  • 2. . Nutrients give our cells all the energy they need . . The digestive system , the respiratory system , the circulatory system and the excretory system carry out the function of nutrition
  • 3. THE DIGESTIVE SYSTEM It has two parts digestive tract and digestive glands
  • 4. The respiratory system is in charge of breathing . Breathing has two movements First , we inhale air and it goes into the lungs . Then , we exhale air sending it out of the lungs
  • 5. THE RESPIRATORY SYSTEM Nostrils , pharynx , larynx , trachea , bronchi , lungs , diaphragm , alveoli
  • 6. The excretory system filters waste substances from the blood . It removes them from the body through excretion . The exretory system is made up of . Sweat glands in the skin The urinary system . This is made up of the kidneys and the urinary tract .
  • 7.  The circulatory system transport nutrients and oxygen to our cells . It is made up of the heart the blood and blood vessels .  The blood collect oxygen and nutrients and transport them to all the cells . It also collect waste substances and takes them to the sweat glands and the urinary system .
  • 8.  Blood is a red liquid tissue made up of cells that float in a liquid called plasma  There are three types of blood cells red blood cells , white blood cells and platelets .  Red blood cells carry oxygen .  White blood cells remove bacteria and viruses from the blood .  Platelets are small fragments of cell that form blood clots .
  • 9.  The heart uses rhythmic systole and diastole movements to pump the blood around the body .  Blood enters the atria through the veins and passes to the ventricles .  Blood comes out of the ventricles through the arteries and travels all over the body
  • 10. THE HEART