b3 - Organisation and the digestive system

• amylase is found in:

  salivary glands

  pancreas

  small intestine

  it converts:

  starch ➞ glucose
• proteases is made in:

  stomach

  pancreas

  small intestine

  converts:

  proteins ➞ amino acids
• lipases is made in

  pancreas

  small intestine

  the enzyme lipase converts:

  lipids ➞ fatty acids and glycerol
• what does the saliva do in digestion?

  salivary glands make saliva containing the enzyme amylase
• what does the oesophagus do in digestion?

  oesophagus carries food to the stomach
• what does the mouth do in digestion?

  chews the food
• what does the stomach do in digestion?

  stomach • churns food • releases protease – digests proteins • releases hydrochloric acid – kills pathogens
• what does the pancreas produce?

  pancreas makes enzymes: amylase, lipase, and protease
• what does the liver do for digestion?

  liver makes bile
• what does the gall bladder do for digestion?

  gall bladder stores bile – bile is alkaline to neutralise hydrochloric acid from the stomach, and emulsifies fat to form small droplets with a high surface area
• what does the small intestine do for digestion?

  small intestine where digested food is absorbed into the blood
• what does the large intestine do for digestion?

  large intestine where water and minerals are absorbed into the blood