Digestion Flashcards
chemical breakdown
secretion
mechanical breakdown
motility
motility
smooth muscles contract to move bolus forward and mix it
chyme
mixture of food and secretions
cephalic phase
digestion in the oral cavity and oesaphagus, no absorption
gastric phase
storage, digestion and defence in the stomach
zymogens
end with -ogen, inactivated form of a substance to avoid autoimmune response
intestinal phase
absorption and digestion is done mostly in the small intestine
crypt lumen
stem cells for repair are present
goblet cells
secrete mucus
enterocytes
transport nutrients and ions, form the brush border
capilleries
transport all absorbed nutrients except fats
lacteals
transport fats to the lymph
what does the pancreas secrete
digestive enzymes and sodium bicarbonate
bile salts
coat lipids to make emulsions, make them transportable
by what is hepatic secretion done
the liver, gall bladder and bile ducts
bicarbonate
can neutralise the acid in chyme when it enters the intestines
large intestine
carbohydrates and peptides are fermented, lipophilic compounds are absorbed
