Digestive System

• Function of the digestive system:

  • Breaking down food
  • Absorbing water and nutrients from food
  • Expelling useless waste
• Parts of the digestive system:

  • Mouth
  • Salivary Glands
  • Esophagus
  • Stomach
  • Pancreas
  • Liver
  • Gall Bladder
  • Small Intestines
  • Large Intestines
• Organs in the digestive system:

  • Pharynx
  • Liver
  • Gallbladder
  • Small intestine
  • Large intestine
  • Salivary glands
  • Mouth
  • Esophagus
  • Stomach
  • Pancreas
  • Anus
• Pathway of the digestive system:

  • Mouth
  • Esophagus
  • Stomach
• Organs of the digestive system:

  • Small Intestines
  • Large Intestines
  • Rectum
  • Anus
• Additional organs involved in digestion:

  • Pharynx
  • Liver
  • Gallbladder
  • Pancreas
  • Salivary glands
• Mouth:

  • Breaks down food physically by munching
  • Uses teeth, tongue, and jawbone
  • Salivary Glands break down complex carbohydrates into less complex carbohydrates in the mouth
• Esophagus:

  • Keeps food traveling down safely from mouth to stomach
  • Epiglottis at the top prevents food from going down the trachea towards the lungs
• Stomach:

  • Produces HCl, an acidic pH 1 substance to further break down food
  • Breaks down protein
• Pancreas:

  • Breaks down carbohydrates into simpler forms ready for absorption
• Liver:

  • Filters toxins and alcohols in the digestive system
• Gallbladder:

  • Produces bile which breaks down fats ready for absorption
• Small Intestine:

  • Has microvilli for food absorption
• Large Intestine (Colon):

  • Absorbing colon: absorbs water & electrolytes
  • Storage colon: stores waste until ready for disposal
• Saliva contains enzymes that begin to break down carbohydrates.
• Digestion begins with chewing, which breaks down large pieces of food into smaller ones.
• The digestive system is responsible for breaking down food into nutrients that can be absorbed by the body.