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Unit 2: NUTRITION

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Nutrition

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Unit 2: NUTRITION

  1. 1. NUTRITION UNIT 2 NATURAL SCIENCE
  2. 2. HUMAN BEINGS are living things THEY PERFORM THREE VITAL FUNCTIONS INTERACTION REPRODUCTIONNUTRITION 5 senses Nervous System Locomotor system ?
  3. 3. NUTRITION IT IS A VITAL FUNCTION BY WHICH LIVING THINGS OBTAIN/GET NUTRIENTS AND ENERGY TO GROW AND PERFORM THEIR DAILY ACTIVITIES OBTAIN ENERGY
  4. 4. NUTRITION Digestive system It takes oxygen (O2) from the atmosphere and it expels CO2. Excretory system Circulatory system Respiratory system It obtains/gets the nutrients that we need from food and drink It gets rid of waste or unwanted substances It transports/carries the nutrients and oxygen to our body cells. It also transports the CO2 and waste.
  5. 5. NUTRITION ENERGY FOOD (NUTRIENTS) OXYGEN CARBON DIOXIDE
  6. 6. EAT WELL AND HEALTHILY Our Digestive System BREAKS DOWN the food in smaller pieces called NUTRIENTS CARBOHYDRATES FATS PROTEINS VITAMINS A good diet should provide us with all these nutrients in a right quantity
  7. 7. http://www.mcdonalds.ca/ca/en/menu/full_menu/sandwiches.html WHERE AND HOW CAN WE FIND INFORMATION ABOUT THE FOOD WE EAT? In the packaging you can find nutritional contents of that food ENERGY
  8. 8. NUTRIENTS
  9. 9. FOOD PYRAMID
  10. 10. Why is important to eat well and healthily? To grow well and to be stronger To prevent from suffering mental and physical diseases such as: obesity, heart attacks, anorexia, bulimia...
  11. 11. What effects can smoking and pollution have in our body? Respiratory Illnesses such as Bronchitis and Lung Cancer
  12. 12. What effects can DRUGS have in our body? DRUGS can interfere in the right functioning of the BRAIN
  13. 13. DIGESTIVE SYSTEM FOOD NUTRIENTS Substances that come from food which living things need in order to live and grow (energy) It’s a group of organs in the body that extract nutrients from food and expel/get rid of undigested waste CARBOHYDRATES VITAMINS FATSPROTEINS
  14. 14. DIGESTIVE SYSTEM Salivary gland Pharynx Oesophagus Stomach Small IntestineLarge Intestine Liver Gallbladder RectumAnus Epiglottis Pancreas
  15. 15. VOCABULARY CRUSH CHEW TRIGGER SWALLOW To press something with force that destroy it To Masticate. An action done by your gums and teeth to crush the food CHEWING GUM To provoque, to cause… To take (food or drink) down your throat with a muscular action SQUEEZE To compress something
  16. 16. DIGESTION Our smell sense triggers the production of saliva. It’s help the teeth to crush food as we chew. The tongue shape the food into a ball called bolus When we swallow the bolus passes into the oesophagus (tubes that links the pharynx with the stomach). There is a flap called epiglottis, which prevent food from going down into the windpipe (trachea) and into the lungs. The muscles of the oesophagus squeeze the food to the stomach.The stomach (main role) breaks down food using its strong muscular walls and producing gastric juices which mix with the bolus and kill harmful bacteria (quimo) https://www.youtub e.com/watch?v=QvG YvK6qScE CHOKE: When the airway is blocked you will choke, won’t breath
  17. 17. DIGESTION In the small intestine, the tiny pieces of food mix with bile (produced by liver) and pancreatic juices (produced by pancreas). They break down it into nutrients. These nutrients pass through its walls and are absorbed into the blood The waste that our body doesn’t need passes to the large intestine. Here, water is absorbed into the blood. The solid waste leaves our body through the anus.
  18. 18. DIGESTION 1ST ORGANISATION 2nd KEY VOCABAULRY: ACCURACY Bile, pancreatic juices, swallow, trigger, crush, teeth...? 3rd GRAMMAR 3rd person Spelling mistakes
  19. 19. Do the lungs have the same size? Why?
  20. 20. CIRCULATORY SYSTEM BLOOD (nutrients and oxygen) BLOOD VESSELS (carry it) HEART (pump the blood) CIRCULATION connect the heart with The LUNGS The rest of the body
  21. 21. CIRCULATORY SYSTEM DELIVERS/CARRIES/DISTRIBUTES BLOOD THE BODY’S TISSUES TO NETWORK (interconnected system) OF BLOOD VESSELS THROUGH A
  22. 22. BLOOD BLOOD IS CARRIED BY BLOOD VESSELS (ARTERIES, VEINS AND CAPILLARES). PLASMA: Is 90% water. It carries the nutrients, waste products and other substances BLOOD VESSEL (vaso sanguíneo) BLOOD IS A LIQUID SUBSTANCE MADE UP OF: RED BLOOD CELLS: Carry oxygen and carbon dioxide. Give blood its colour. WHITE BLOOD CELLS: Fight infeccions. They absorb and kill germs and bacteria which enter the body. PLATELETS (Plaquetas): Join together when the body loses blood to help stop bleeding.
  23. 23. IMAGINE BLOOD VESSEL AND PLASMA RED BLOOD CELLS WHITE BLOOD CELLS PLATELETS
  24. 24. BLOOD WHEN WE LOSE BLOOD WE ARE BLEEDING BLEED
  25. 25. BLOOD VESSELS ARTERY (RED): CARRY BLOOD FROM THE HEART THE REST OF THE BODY. THEY TAKE THE BLOOD AWAY VEIN (BLUE): CARRY/BRING BLOOD BLACK TO THE HEART. TOWARDS THE HEART. CAPILLARIES: Tiny blood vessels where nutrients and gases can easily pass through them to the cells.
  26. 26. HEART RIGHT SIDE OF OUR BODY? LEFT SIDE OF OUR BODY?
  27. 27. HEART Each half is divided in two chambers. The one at the top is called atria or atrium (aurícula) and the other chamber at the bottom is called ventricle (ventrículo). The atrium and the ventricle of the same side are separated by a valve. The heart is divided in two halves by a thick and elastic muscular wall. Left side (red half) and right side (blue part). Atriums receive blood coming into the heart. Ventricles pump the blood out of the heart. ATRIUM VENTRICLE TRICUSPID MITRAL RIGHT SIDE LEFT SIDE
  28. 28. HEART Right ventricle Right atrium LEFT ventricle Superior VENA CAVA Inferior VENA CAVA AORTA ARTERY PULMONARY VEIN (oxygenated blood comes back to the heart) LEFT atrium PULMONARY ARTERY (deoxygenated blood goes to lungs)
  29. 29. CIRCULATION

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