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Published byRoland Griffith Modified over 9 years ago
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DIGESTIVE SYSTEM
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DIGESTION THE BREAK DOWN OF FOOD INTO NUTRIENTS.
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ENZYMES CONTROL CHEMICAL REACTIONS IN THE BODY
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MOUTH CONTAINS SALIVARY GLANDS SALIVA CONTAINS PTYALIN WHICH BREAKS DOWN STARCHES TO SUGARS
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TEETH INCISORS-CUT FOOD CANINES- SHRED FOOD MOLARS- GRIND FOODS
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TASTE BUDS SWEET-TIP OF TONGUE SOUR- SIDES OF TONGUE SALTY-SIDES OF TONGUE BITTER-BASE OF TONGUE
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ESOPHAGUS CONNECTS MOUTH TO STOMACH ABOUT 10 INCHES IN LENGTH LINED WITH SLIPPERY MUCUS
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PERISTALSIS WAVES OF MUSCLE CONTRACTIONS IN THE ESOPHAGUS
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STOMACH 12” LENGTH CELLS IN THE STOMACH WALL RELEASE GASTRIC JUICES
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GASTRIC JUICES CONTAIN THE ENZYME PEPSIN HYDROCHLORIC ACID THICK SLIPPERY MUCUS
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IN THE STOMACH MECHANICAL AND CHEMICAL DIGESTION ENZYMES=CHEMICAL MUSCLES CHURN FOOD= MECHANICAL
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IN THE STOMACH FOOD DIGESTED 3-6 HOURS FOOD LEAVES AS A SOFT WATERY SUBSTANCE
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SMALL INTESTINE WHERE MOST OF THE DIGESTION TAKES PLACE 16.5-32.8’ (18’)
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SMALL INTESTINE CELL LINING THE WALLS RELEASE CHEMICAL ENZYMES
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LIVER THE LARGEST AND HEAVIEST ORGAN PRODUCES BILE WHICH HELPS IN DIGESTION
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CONTINUED IT SENDS BILE TO THE GALL BLADDER
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BILE BREAKS UP FAT INTO SMALLER PARTICLES
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PANCREAS CREATES PANCREATIC JUICE THESE ENZYMES BREAK DOWN PROTEINS, STARCHES, AND FATS
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ABSORPTION OF FOOD PROTEIN-TO AMINO ACIDS CARBOHYDRATES(STARC HES AND SUGARS)-TO SIMPLE SUGARS FATS-TO FATTY ACIDS AND GLYCEROL
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ABSORPTION NUTRIENTS ARE ABSORBED THROUGH THE WALLS OF THE SMALL INTESTINE INTO THE BLOODSTREAM
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LARGE INTESTINE ABOUT 5’ IN LENGTH FOOD STAYS IN LARGE INTESTINE 18-24 HOURS WATER IS ABSORBED VITAMIN K AND B ABSORBED
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SOLID WASTE MATERIALS NOT ABSORBED BY THE INTESTINES (DEAD BACTERIA, SOME FAT AND PROTEIN, UNDIGESTED FOOD
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CONTINUED ROUGHAGE, DRIED OUT DIGESTIVE JUICES, MUCUS, DISCARDED INTESTINAL CELLS)
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THE END OF THE LINE RECTUM- A SHORT TUBE AT THE END OF THE LARGE INTESTINES ANUS- OPENING AT THE END OF THE RECTUM
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THE END QUESTIONS ?
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