GI 7: Phases of Digestion Flashcards
regulation of secretion takes place at the level of the ___ and ___ systems
endocrine and nervous
the nervous system for secretions includes both __ and __ neural reflexes
short and long
long receptor reflexes go from receptors in the GI tract to the ___ and back
CNS
short receptor reflexes go from the receptors in the GI tract to The ___ and back
ENS
the endocrine system secretes )____, ___ and __
gastrin, cholecystokinin (CCK) and secretin
which arm of the automatic nervous system stimulates gI secretions?
parasympathetic
which arm of the ANS inhibits GI secretions?
sympathetic
the cephalic phase occurs at what stage of eating
before
the gastric phase occurs at what stage of eating?
during
the intestinal phase occurs at what stage of eating?
after
the cephalic stage is stimulated by ____
sight , smell, taste and thought around food
is the cephalic stage long or short reflexes?
long
the cephalic stage causes the activation of the ____ (brain structure) that then stimulates the vagus nerve to stimulate the secretion of ____, ___ and ___ from the ENS (in stomach()
medulla oblongata; gastrin, HCL, histamine
what is the function of the cephalic stage?
makes digestion more efficient
the gastric phase of digestion is stimulated by ___ and ___ which activate the ____ (brain structure) or directly the ____ to promote the secretion of ___, ___ and ___ (gastric secretions)
distention of stomach and peptides in stomach ; medulla oblongata; gastrin, histamine, HCL
