Digestion Review

1
Digestion Review

• MOUTH
• Mechanical and Chemical Digestion begin in the
  mouth
• Saliva is produced by the salivary glands and
  contains enzymes which help to speed up the
  process of digestion. This is the Chemical Part
  of digestion in the mouth.
• The teeth and tongue help to break up the food
  you eat this is the mechanical part of
  digestion in the mouth.
• ESOPHAGUS
• coated in mucus
• Connects the mouth to the stomach
• A wave like motion called peristalsis moves food
  down this organ.
• STOMACH
• J-shaped organ
• Coated in mucus so the hydrochloric acid that
  helps the enzyme pepsin will not burn the lining
  (ulcers)
• Muscles here mechanically break down food while
  enzymes chemically break it down.
• SMALL INTESTINES
• MOST CHEMICAL DIGESTION TAKES PLACE HERE!
• The pancreas sends juices here and the liver
  sends the bile (which is stored in the gall
  bladder)
• The Small intestine even makes its own juices
  full of enzymes
• Villi at the end of the S.I. absorb food into the
  bloodstream so it can be taken to all parts of
  the body
• LARGE INTESTINES
• Undigested food moves here to prepare to exit the
  body

2
Digestion Review Contd

• 6 essential nutrients for human health
• Proteins
• Fats
• Water most important - need 2 liters per day
• Vitamins need in small amounts
• /Minerals need in small amounts
• Carbohydrates
• FOOD GUIDE PYRAMID
• Indicates how many servings from each food group
  should be eaten each day
• Classifies food into 6 groups and helps a person
  know the of servings from each group to eat
  each day
• STUDY ALL NOTES
• STUDY YOUR DIAGRAM OF THE ORGANS IN THE SYSTEM
• GO TO MY WEB PAGE AND GO THROUGH THE WEBQUEST WE
  DID IN CLASS LAST WEEK USE THE ONLINE QUIZZES
  TO HELP YOU PREPARE FOR THE DIAGRAM ON THE QUIZ!