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22 Cards in this Set

  • Front
  • Back
when does saliva secreted?
it is secreated in response to a nervous reflex triggered byt he presence of food in the mouth
function of salivary amylase
increase moisture

break down carbohydrates (starch)

secreates from salivary gland
composed of dentin

crown part of the tooth is coat of enamel which is hardest substanfe of body
made of muscle
only peristalsis (smooth muscle contraction)

always closed by the esophagus sphinter

two types of muscle, circular and longitudinal
trace of air vs food
mouth->pharynx->esphagus (food) or treachea (air)
ph 1.6-2.4

only peristalsis

digestion of protein by pepsin.

food becomes chyme
gastric gland in stomach
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
perietal cell
secrete HCl
convert pepsinogen to pepsin
chief cell
secrete pepsin
which turns in to pepsin by help of HCl
small intestine
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
division of SI
duodenum-food is broken down

Jejunum and ileum-nutrient of the food are absorbed
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
mixture contain salt and lipids that aid in fat processing

contain no enzyme

it emulsifies fat and expose fat to lipase
gall bladder
stores bile

attach to liber
secretes pancreatic juices(hydrolytic enzyme)into the small intestine (deudomum); amylase, trypsin,chymotrpsin, pancreatic lipase, sodium bicarbonate which neutralize acidic chyme.
large intestine aka colon
cecum, colon, rectum

water reabsorption

storage of feces
small intestine, pancreas and stomach make both hormone and digestive enzyme
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)
pancreatic juicw, 촉진

bile 을 gall bladder에서 secrete하라고 촉진
protozoans digestion
unicellular organism

food capture by phagocytosis

food vacole from immediately after ingestion

lysosome fuse with food vacole
one way digestive sys

ex earthworm
mouth-pharynx-exphagus-crop(store food)-gizzard(grind food)-intestine-anus
similar to earthwarm
have jaws for chewing and salivary glands