sect.2- 9 p.67- 69 digestion. process that breaks down food digestion
TRANSCRIPT
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SECT.2-9P.67-69DIGESTION
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PROCESS THAT BREAKS DOWN FOOD
DIGESTION
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1. INTRACELLULARWITHIN THE CELL EXAMPLESPLANTS, PARAMECIUM (PROTISTS)
*ENZYMES BREAK DOWN FOOD INTO SMALL MOLECULES THE CELL CAN USE
2.EXTRACELLULAROUTSIDE THE CELL EXAMPLEANIMALS *ENZYMES ARE SECRETED INTO A DIGESTIVE CAVITY WHERE FOOD IS BROKEN DOWN AND THE NUTRIENTS ARE PASSED TO CELLS
2 TYPES OF DIGESTION
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1. INCOMPLETE DIGESTIVE SYSTEM*ONE OPENING (MOUTH OR ORAL CAVITY)
EXAMPLESTARFISH2.COMPLETE
DIGESTIVE SYSTEM*TWO OPENINGS (MOUTH AND ANUS)
EXAMPLEHUMAN
2 TYPES OF ANIMAL SYSTEMS
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1. PHYSICAL LARGE PIECES ARE BROKEN INTO SMALLER ONES
ALSO KNOWN AS MECHANICAL
2. CHEMICAL BREAKING DOWN OF COMPLEX MOLECULES INTO SMALLER ONES
INCLUDING CARBOHYDRATES, PROTEINS AND LIPIDS
2 PARTS TO DIGESTION
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P.69-73 (SEE CHART P.71)
THE HUMAN DIGESTIVE SYSTEM
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INGESTION OF FOODPHYSICAL DIGESTIONBEGINNING OF
CARBOHYDRATE DIGESTION (SALIVARY AMYLASE FROM THE SALIVARY GLANDS)
1. MOUTH (ORAL CAVITY)
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TUBE OFF THE PHARYNX THAT CONTRACTS (THIS CONTRACTION IS CALLED PERISTALSIS) TO PUSH FOOD TO STOMACH
2. ESOPHAGUS
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FLAP TO COVER TRACHEA OR AIRWAY
3. EPIGLOTTIS
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BREAKS DOWN FOOD INTO A PASTE-LIKE CONSISTENCY
CONTAINS HYDROCHLORIC ACID (pH NEAR 2)
HORMONE GASTRIN IS PRODUCED TO STIMULATE ACID PRODUCTION
SECRETES PEPSIN (ACTIVE FORM OF PEPSINOGEN) TO BEGIN PROTEIN DIGESTION
MUCUS LINING FOR PROTECTION
SORES CALLED ULCERS CAN FORM
4. STOMACH
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PRODUCES PANCREATIC JUICE TO MAKE THE SMALL INTESTINE BASIC (pH NEAR 8)
RELEASES THE ENZYMES PANCREATIC AMYLASE (CARBS), TRYPSIN (PROTEINS), LIPASE (LIPIDS) INTO THE SMALL INTESTINES
5. PANCREAS
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PRODUCES BILE TO EMULSIFY (BREAKDOWN FROM LARGE TO SMALL) LIPIDS
6. LIVER
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STORES BILEGALLSTONES CAN FORM
HERE
7. GALL BLADDER
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NUTRIENT ABSORPTION OF DIGESTIVE END PRODUCTS (MONOMERS) INTO THE BLOOD THROUGH STRUCTURES CALLED VILLI
BASIC ENVIRONMENT pH NEAR 8
HORMONE PRODUCED IS SECRETIN (WHICH STIMULATES THE PANCREAS TO SECRETE PANCREATIC JUICE)
8. SMALL INTESTINE
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WATER ABSORPTION WASTE FOR EGESTION
(REMOVAL)
9. LARGE INTESTINE
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28 MULTIPLE CHOICE (WITH 7 DIGESTION DIAGRAMS)
4 ORGAN IDENTIFICATION
4 SHORT ANSWER (1 PT. EACH)
3 BONUS SHORT ANSWER (1 PT. EACH)
TOTAL VALUE36 POINTS
WHAT TO STUDY NOTES (INCLUDING HUMAN DIGESTIVE SYSTEM ORGAN OUTLINE)
EARTHWORM/BIRD HANDOUT
DIGESTION DIAGRAM HANDOUTS (CARBS, PROTEINS AND LIPIDS)
BODY DIAGRAM HANDOUT
HW QUESTIONS STUDY GUIDE QUESTIONS
DIGESTION TEST FORMAT