DSA 1 PHYS into to GI physiology Flashcards
the GI tract
main functions?
main properties?
GI tract sphincters?
do what?
optimize what?
(7)
GI tract intestinal (small intestine) wall structure
functional layers?
ENS?
ENS?
comprises what?
innervated by?
Input?
ENS controls what functions of GI tract?
receives info from where?
CNS in GI function?
reflex?
Parasympathetic?
what nerves?
preganglionic n. cell bodies where?
postganglionic neurons where?
synapse is what type of receptor?
sympathetic innervations?
what nerves?
preganglionic efferent arise where and end where?
postganglionic fibers from what innervates which plexuses?
preganglionic efferents release? while postganglionic release?
paracrine regulation?
what type of signaling?
action of what types of molecules (2 specific examples with 2 types)
reach target cell by what?
Somatostatin
secreted by?
stimuli?
actions?
outside GI?
HIstamine
stored and secreted by? located in?
target?
action?
endocrine regulation
action of?
type of cells that are filled with this?
released upon?
action via?
Name 4 hormones of the GI tract
Gastrin actions?
CCK actions?
increases?
stimulates?
inhibits?
can also act as?
secretin actions
increases?
decreases?
inhibits?
can also act as?
GIP actions
increase?
decrease?
What would be more effective in increasing insulin secretion?
a. oral glucose administration?
b. intravenous glucose administration?
a. oral glucose stimulates GIP, which stimulates insulin secretion, and has also direct stimulatory effects on B cells
incretin effect!
Neural regulation?
action of?
whats needed for release?
what is the action of these molecules?
Neurotransmitters? (8)
relaxation/contraction? increase/decrease?
