OBJ: Given notes, transparency, activity sheet SWBAT explain the functions of the small and large intestine during digestion with 70% accuracy.
BRING IN TEXTBOOKDN: HW check- Digestive Process Begins Booklet
ACT: Introduction to small intestine, liver, pancreas, large intestine function during digestion.Text, read p. 68-71; Work on Final Digestion & Absorption Booklet HW: Complete Final Digestion and Absorption Booklet; Work on SMSD Review Sheets; SMSDFE Exam, Feb 25; Winter Recess, Complete NYSSAE 2008 Exam (Q:1-81, scantron; due Monday, Feb 23)
Small Intestine: Absorption
Nutrients, Minerals, Vitamins
Osm
osi
s
H
L
Final Digestion & Absorption NotesStomach Function: holds and stores food;
digestion begins (protein breakdown).
Small Intestine Function: almost all chemical digestion and absorption (into Circulatory System) occurs; enzymes enter small intestine from small intestine wall, liver and pancreas.
• Wall covered by finger-like villi which absorb nutrient molecules.
• Villi increase surface area which increases rate of absorption. (feeding of body cells)
• Nutrient molecules move by osmosis from small intestine into capillaries (Circulatory System).
Purpose:
increase
surface area
for
rapid
nutrient
absorption
Final Digestion & Absorption NotesLiver Function:
breaks down medicine and alcohol (poisons, toxins)
removes nitrogen
produces bile
Bile: stored in gallbladder (below liver);
like a dish detergent . . . physically breaks down large fat particles into small fat particles.
nitrogen
Enzymes to breakdownFats
Protein
Complex carbohydrates
Final Digestion & Absorption Notes• Pancreas Function: produces enzymes which
enter small intestine and chemically breaks down fats, proteins and complex carbohydrates (starch).
• Large Intestine Functions:→ contains good bacteria that produces Vitamin K (clots blood)
→ removes water from undigested food which enters the bloodstream by absorption.____________ Excretory System ____________
Rectum: stores undigested solid waste
Anus: muscular opening at end of rectum
Vitamin K
UPCO Chapter 12; p. 224-229
• 1] 1 10] 3 19] 1 28] 4• 2] 3 11] 1 20] 2 29] 2• 3] 1 12] 4 21] 3 30] 1• 4] 2 13] 3 22] 2 31] 2• 5] 3 14] 2 23] 3 32] 3• 6] 1 15] 2 24] 1 33] 4• 7] 2 16] 2 25] 1• 8] 2 17] 4 26] 1• 9] 4 18] 2 27] 4
Final Digestion & Absorption Notes
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