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1. The process by which the Digestive System breaks down food
into molecules the body can use. There are two types of digestion:
1)Mehanical 2)Chemical NEXT
2. During mechanical digestion foods are physically broken
apart into smaller pieces NEXT
3. During chemical digestion chemicals produced by your body
break large molecules into smaller ones that your body can use
NEXT
4. Because MECHANICAL digestion breaks down food into small
pieces, CHEMICALS can digest the food faster Most of the chemicals
involved in digestion are ENZYMES, substances that speed up
chemical reactions
5. During mechanical digestion chemicals produced by your body
break large molecules into smaller ones that your body can use
6. During mechanical digestion foods are physically broken
apart into smaller pieces
7. Click picture to advance During CHEMICAL DIGESTION chemicals
produced by your body break large molecules into smaller ones that
your body can use
8. WHERE DOES DIGESTION BEGIN? MOUTH INGESTION happens here
(TAKE IN FOOD) THE MOUTH begins the digestion of CARBOHYDRATES
Carbohydrates (CHO)= nutrients made of carbon, hydrogen, and Click
picture to advance oxygen
9. TEETH 32 teeth Tear, crush, and grind your food into small
pieces MASTICATION: Chewing process by which food is mashed and
Click picture to advance crushed by teeth
10. MECHANICAL DIGESTION TEETH TYPES OF TEETH: Incisors WHY?
Cut food into bite sized pieces Foods are physically Canines being
broken apart into Tear and slash food smaller pieces by teeth
Premolars Crush and grind food Molars Crush and grind food
11. Lets Review. The process by which the digestive system
breaks down A) Digestion food into B) Mastication molecules the C)
Ingestion body can use is called?
12. There are two types: 1)Mechanical: Foods are physically
broken apart into smaller pieces 2)Chemical: Chemicals produced by
your body break large molecules into smaller ones that your body
can use NEXT Click picture to advance Click on DIGESTION to see a
video clip
13. Mastication is also known as the chewing process.
Mastication aids in mechanical digestion by the TEETH
14. Ingestion occurs when the food first enters the mouth
15. Click SO FAR to advance SO FAR . 2) TEETH 1) MOUTH
MASTICATION INGESTION MECHANICAL DIGESTION
16. TWO FUNCTIONS SALIVARY GLANDS 1. Moistens and lubricates
food 2. Adds enzymes to begin breaking down carbohydrates Click
picture to advance
17. SALIVA SALIVARY Contains enzymes that GLANDS start the
digestion of carbohydrates-which are converted to glucose Moistens
the bites of food into a slippery mass that can be easily Click
picture to advance swallowed
18. CHEMICAL SALIVARY DIGESTION GLANDS WHY? An enzyme in saliva
begins to break down the starches in your food Click picture to
advance
19. FUNCTIONS: TONGUE Pushes food around Makes food into a ball
to help you swallow Click picture to advance
20. The functions of the SALIVARY GLANDS is are: 1) Moisten and
lubricate food 2)Add enzymes to begin breaking down
carbohydrates
21. The functions of the SALIVARY GLANDS are: 1) Moisten and
lubricate food 2) Add enzymes to begin breaking down carbohydrates
Saliva 1) Contains enzymes that start the digestion of
carbohydrates-which are converted to glucose 1) Moistens the bites
of food into a slippery mass that can be easily swallowed Click
picture to advance
22. Click REMEMBER to return to the True/False question The
functions of the SALIVARY GLANDS are: 1) Moisten and lubricate food
2) Add enzymes to begin breaking down carbohydrates Saliva 1)
Contains enzymes that start the digestion of carbohydrates-which
are converted to glucose 1) Moistens the bites of food into a
slippery mass that can be easily swallowed
23. MOUTH: INGESTION TEETH: MASTICATION MECHANICAL DIGESTION
SALIVARY GLANDS: CHEMICAL DIGESTION TONGUE: MAKES FOOD INTO A BALL
DIGESTIVE PROCESS
24. WHERE DOES CHEMICAL DIGESTION OCCUR? A) MOUTH B) TEETH C)
SALIVARY GLANDS D) TONGUE
25. A) MOUTH REMEMBER, the mouth begins the The mouth also
starts digestive process by the digestion of ingesting food
CARBOHYDRATES (INGESTION)
26. B) TEETH 32 teeth MASTICATION: tear, crush, and grind
Chewing process food into small pieces Incisors, canines,
premolars, and MECHANICAL molars DIGESTION: Food is physically
being broken apart into smaller pieces
27. C) SALIVARY GLANDS NEXT
28. D) TONGUE FUNCTIONS: CHEMICAL DIGESTION does not occur
Pushes food around MECHANICAL Rolls food into a DIGESTION does not
occur ball to help you swallow
29. DIGESTION is a PINBALL MACHINE PINBALL=FOOD Click on
DIGESTION is a PINBALL MACHINE for more information on digestion
Click on PINBALL=FOOD for an interactive diagram MOUTH: PINBALL
BEGINS JOURNEY TEETH: PINBALL GOES THROUGH A CHOMPING MASTICATOR
SALIVARY GLANDS: PINBALL GETS RAINED ON TONGUE: TRAP DOOR GRABBER
Click picture toreturn to the ROLLS FOOD AND SENDS beginning IT ON
ITS WAY DOWN THE ESOPHAGUS TO BE CONTINUED.