Science ( class-7 )

• Digestion


  1. Chewing

  2. Swallowing

  3. Food travels through esophagus

  4. Food enters stomach

  5. Stomach releases acids and enzymes

  6. Food enters small intestine

  7. Small intestine absorbs nutrients

  8. Unabsorbed food enters large intestine

  9. Large intestine absorbs water and sends waste out of body
• Digestion


  Process of breaking down large insoluble food particles into smaller water soluble molecules that can be absorbed by blood and provide energy
• Chewing


  • Breaks down food particles into little pieces that are easier to swallow
  • Saliva mixes with food and helps break it down further
• Swallowing


  The process of the tongue pushing food particles down the throat
• Esophagus


  The long pipe that food travels through
• Stomach


  Releases acids and enzymes that further break down food particles
• Pepsin


  Enzyme in the stomach that helps break down proteins
• Small intestine


  Absorbs the broken down food particles and transfers them to the body through blood
• Liver


  Secretes bile which helps break down fats
• Pancreas


  Releases enzymes to help digest all kinds of food particles
• Large intestine


  Absorbs water and other particles, sends waste material out of the body
• Large intestine produces antibodies that help boost immunity
• When your face becomes red due to blushing

  The lining of your stomach becomes red too