Digestive system

• What is a tissue?

  A group of cells with a similar structure and function
• What is an organ?

  A group of tissues working together for a specific function
• What is an example of an organ?

  The stomach
• What happens to food in the mouth during digestion?

  Food is chewed and enzymes in saliva begin to digest starch
• What occurs in the stomach during digestion?

  Enzymes begin the digestion of proteins and food is churned into a fluid
• What role does the pancreas play in digestion?

  The pancreas releases enzymes that continue the digestion of starch, protein, and lipids
• What is the function of bile released by the liver?

  Bile neutralizes stomach acid and speeds up the digestion of lipids
• How are food molecules absorbed in the small intestine?


  By diffusion or active transport
• What happens in the large intestine?

  Water is absorbed into the bloodstream