Diet & digestion

• balanced diet


  7 food groups in the right proportions: carbohydrates, lipids, proteins, fibre, vitamins, minerals and water
• carbohydrates


  supply quick-release energy needed for all reactions in our bodies
• proteins


  helps the body grow new cells and tissues for growth and repair
• lipids (fats and oils)


  • used to make cell membranes
  • source of energy (energy storage)
  • help with insulation
• vitamin A


  • helps vision in dim light
  • helps to give you healthy skin
  • helps the immune system to function properly
• vitamin C


  • helps the body to make red blood cells
  • releases food energy
  • forms an essential part of collagen
• vitamin D


  • keeps cells healthy
  • helps wounds to heal
  • maintains healthy skin and tissues
• label the structure of a villus

  A) villi

  B) capillaries

  C) lacteal

  D) blood vessels

  
• label the structure of the human digestive system

  A) oesophagus

  B) stomach

  C) small intestine

  D) liver

  E) large intestine