Download B20 C6 Your Own Digestion Map

B20 C6 Your Own Digestion Map
Objective: to colorfully and accurately map the layers of the digestive process. Color code
your information – make a legend.
1) Structures: the organs of the digestive tract and the accessory organs
- accurate shapes and sizes (use pg. 218 for size comparisons)
 mouth
 teeth
 salivary glands
 tongue
 epiglottis
 esophagus
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esophageal sphincter
stomach
pyloric sphincter
duodenum
jejenum
ileum
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large intestine
rectum
anus
liver
gall bladder
pancreas
2) Increases in Surface Area: Internal structure of stomach, small intestine
 rugae
 ridges
 villi
 microvilli
3) Sites of Mechanical Digestion
 chewing and mixing of food
 peristalsis
 churning
 segmenting
4) Sites of Chemical Digestion: Secretions labeled with arrows from site of production to
site of action. Color code enzymes for the macromolecules they digest (starch, sugars,
proteins, lipids, nucleic acids)
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 trypsin
 bicarbonate
 bile
 peptidases
 nucleases
 nucleosidases
5) Label pH of mouth, stomach, small intestine, large intestine
saliva
mucus
salivary amylase
HCl
pepsin
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gastric juices
carbohydrases
pancreatic lipase
pancreatic amylase
chymotrypsin
6) Digestion: This works best if you color code this
 proteins to amino acids
 lipids to glycerol and fatty acids
 polysaccharides to monosaccharides
 amino acids
7) Sites of Absorption
 glycerol and fatty acids
 monosaccharides
 water and salts
Bacteria: explain their function: do this individually
 Colon bacteria – explain their function
 Science in the News: Research bacterial flora in small intestine and large intestine and report
3 WOW findings and medical implications. Don’t forget to include Who What When Where
Why, and what media site you got the info from.