The Digestive System. The Mouth The Digestive System The Mouth Physical Digestion.
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Transcript of The Digestive System. The Mouth The Digestive System The Mouth Physical Digestion.
The Digestive System
The Mouth
•Physical Digestion
•Chewing
•Chemical Digestion
•Saliva starts starch digestion
The Digestive System
Stomach
•Chemical digestion
•Enzymes and hydrochloric acid
•begin protein digestion
The Digestive System
Pancreas
•Produces most digestive enzymes
•These enzymes digest carbohydrates, proteins, and fats
The Digestive System
Duodenum
•First part of small intestine
•Receives bile from liver
•Receives enzymes from pancreas
The Digestive System
Duodenum
•First part of small intestine
•Receives bile from liver
•Receives enzymes from pancreas
•Adds more enzymes
The Digestive System
Small Intestine
•Chemical Digestion completed
•Proteins digested into amino acids
The Digestive System
Small Intestine
•Chemical Digestion completed
•Proteins digested into amino acids
•Carbohydrates digested into simple sugars
The Digestive System
Small Intestine
•Chemical Digestion completed
•Proteins digested into amino acids
•Carbohydrates digested into simple sugars
•Fats digested into fatty acids and glycerol
The Digestive System
Small Intestine
•Absorption of all nutrients into bloodstream
•amino acids
•simple sugars
The Digestive System
Small Intestine
•Absorption of all nutrients into bloodstream
•amino acids
•simple sugars
•fatty acids and glycerol
The Digestive System
Small Intestine
•Absorption of all nutrients into bloodstream
•amino acids
•simple sugars
•fatty acids and glycerol
•vitamins and minerals
The Digestive System
Large Intestine
•reabsorbs water back into bloodstream
•healthful bacteria make some vitamins from waste
Digestion Summary
Physical Chemical Absorption
Mouth Chewing Saliva digestsstarch
none
Stomach none Begin proteindigestion
none
SmallIntestine
Fatsemulsified
All digestioncompleted
All nutrientsabsorbed
LargeIntestine
none none Waterreabsorbed
Enzyme Summary
Digestcarbohydrates
Digestproteins
Digest fats
Mouth Yes - saliva no no
Stomach no Yes- gastricjuice
no
SmallIntestine
Yes - many Yes - many Yes
LargeIntestine
no no no