1. Welcome – today we begin
Our next interesting unit …
The human digestive system
Please dig out your note stuff.

2. Welcome – please dig out
Your notes for a little review
A great film and Then our
digestive system Castle lng
quiz.

3. Welcome – please dig out
Your notes today we finish
Them up and do a castle
Learning quiz.

4. The Digestive system – goal
Is to get nutrients(Good stuff
From food) into a liquid form
(Soluable) so it can be
Transported by blood to cells

5. Ingestion – taking in food.

6. Digestion begins in the mouth
With the teeth grinding,
Cutting, tearing food =
Mechanical or Physical
digestion.

7. Chemical digestion also
Begins in the mouth with
The salivary glands releasing
Saliva which breaks down
Starch using the enzyme
Amalyase.

8. Esophagus – tube that connect
The mouth and stomach.
Peristalsis – muscular wave
Like contractions that move
Food, occurs in the esophagus
Stomach and both intestines.

11. Stomach – muscular sac, both
Chemical and mechanical
Digestion occurs here.
Chemical – gastric glands of
Stomach secrete HCL and
Gastric protease – enzyme,
Breaks down proteins

17. Small intestine – most
Chemical digestion occurs
Here.

22. Villi – finger like projections of
The small intestine, this is
Where absorbtion of nutrients
Into blood Occurs.

23. https://www. youtube. com/watch

24. https://www. youtube. com/watch

25. The passage of end products
Of digestion into cells is
ABSORBTION

26. Liver – secretes bile which is Stored in the gall bladder and
Released into small intestine
To break down fats =
Emulsification. .

29. Large Intestine –Major function
Is to reabsorb water.

30. Undigested materials are then
Excreted = egestion

32. GI tract = gastrointestional
Tract, one way digestive tube.
Hydrolysis – large food particles
Are broken down using water.
Pancreas – secretes digestive
Enzymes into small intestine

34. Nat Geo – digestion 5 min.

35. Nutritional digestive info.
Carbohydrates – major energy
Source.(made of simple sugar
= glucose)
Cellulose = roughage,
Fiber, helps
Move food through GI tract,
Ex. = lettuce, grains, fruits

36. Carbohydrates and proteins
Are to big to pass through
The cell membrane. They
Must be broken down into –
Simple sugars = carbohydrates
Amino acids = proteins

37. Starches are also to large
And must be broken down –
Digested into simple sugars.

38. Proteins – growth and repair,
Broken down into amino acids
Which are used to make human
Proteins.
Fats – energy & need to form
All your cell membranes
Saturated fats – bad for
Cardiovascular system. Found
In animal fat =cholesterol

39. .
Disorders
Ulcer – sore in stomach lining

43. Constipation – too much water
Is removed from large
Intestine.
         

44. Diarrhea – not enough water
Is removed by Lg. Intestine
Appendicitis – inflamation of
Small pouch at beginning of
Large intestine.

46. Gallstones – hardened
Cholesterol deposits, may
Block the flow of Bile_ .