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22 Cards in this Set
- Front
- Back
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when does saliva secreted?
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it is secreated in response to a nervous reflex triggered byt he presence of food in the mouth
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function of salivary amylase
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increase moisture
break down carbohydrates (starch) secreates from salivary gland |
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teeth
-incisor -cuspid -bicuspid -molar |
composed of dentin
crown part of the tooth is coat of enamel which is hardest substanfe of body |
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tongue
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made of muscle
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esophagus
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only peristalsis (smooth muscle contraction)
always closed by the esophagus sphinter two types of muscle, circular and longitudinal |
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trace of air vs food
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mouth->pharynx->esphagus (food) or treachea (air)
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stomach
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ph 1.6-2.4
only peristalsis digestion of protein by pepsin. food becomes chyme |
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gastric gland in stomach
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located inner wall of stomach
made of 3 types of cell -mucos cell, secrete mucus which protects inner wall -chief cell, secrete pepsinogen which is converted to pepsin by HCl -perietal cell, secrete HCl |
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perietal cell
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secrete HCl
convert pepsinogen to pepsin |
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chief cell
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secrete pepsin
which turns in to pepsin by help of HCl |
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small intestine
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both peristalsis and segmental movement
digestion and absorption -lipase (lipid digestion) -aminopeptidase "trpsin and pepsin" (polypeptide "protein" digestion) -disaccharidase "maltase, lactase, sucrase" digestion of carbohydrates -secretin which stimulates the release of sodium bicarbonate from pancreas |
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division of SI
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duodenum-food is broken down
Jejunum and ileum-nutrient of the food are absorbed |
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liver
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storing of certain nutrients
detoxification of chemicals and drugs from blood stream formation of urea formation of glycogen from glucose and vice versa production of bile which stored in gall bladder and secreted into the small intestine |
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bile
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mixture contain salt and lipids that aid in fat processing
contain no enzyme it emulsifies fat and expose fat to lipase |
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gall bladder
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stores bile
attach to liber |
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pancreas
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secretes pancreatic juices(hydrolytic enzyme)into the small intestine (deudomum); amylase, trypsin,chymotrpsin, pancreatic lipase, sodium bicarbonate which neutralize acidic chyme.
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large intestine aka colon
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cecum, colon, rectum
water reabsorption storage of feces |
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small intestine, pancreas and stomach make both hormone and digestive enzyme
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SI; secretin (H) which pancreatic 촉진, lipase, aminopeptidase and disaccharidases
panreas; insulin (H) and lipase and more(E) Stmoach; gastrin (H) which, 위액분비. pepsinogen (E) |
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cholecystekinin-pancreozymin
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pancreatic juicw, 촉진
bile 을 gall bladder에서 secrete하라고 촉진 |
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protozoans digestion
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unicellular organism
food capture by phagocytosis food vacole from immediately after ingestion lysosome fuse with food vacole |
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Annelids
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one way digestive sys
ex earthworm mouth-pharynx-exphagus-crop(store food)-gizzard(grind food)-intestine-anus |
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arthropods
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insects
similar to earthwarm have jaws for chewing and salivary glands |
