6

Question 1

where are interstitial cells of CAJAL found

Answer 1

musclaris propria

Question 2

what junction is found between interstitial muscles of CAJAL

Answer 2

gap junctions

Question 3

main function of interstitial muscles of cajal

Answer 3

depolarise spontaneously to contract and do peristalsis

Question 4

whats the name of pacemaker cells

Answer 4

interstitial cells of CAJAL

Question 5

what components make up the enteric nervous system

Answer 5

submucosal plexus

myenteric plexus

Question 6

whats the relationship centre myenteric plexus and interstitial cells of canal

Answer 6

myenteric plexus modulates activity of caJAL

Question 7

what ENS neurotransmission is generally excititaroy

Answer 7

cholinergic

excitach!!!!!!!

Question 8

what ENS neurotransmission is generally inhibitory

Answer 8

noradrenergic

Question 9

whats the migrating motor complex

Answer 9

pattern of electromechanical activity in GI smooth muscle between meals.
made up of 3 phases
tink of a motor bike that moves in intestine entre repas.
phase 3 is when youre most hungry.

Question 10

what are the three phases of food intake

Answer 10

cephalic phase: preparation
gastric phase: early digestion
intestinal phase: aborption. triggered by chemoreceptor activation

Question 11

whats achalasia

Answer 11

food blockage

Question 12

movements that form the gastric phase of food intake

Answer 12

accommodation: stomach entry widens

receptive relaxation: relaxation of LOS

Question 13

what reflex modulates gastric tone?

Answer 13

vasovagal reflex

Question 14

whats retropulsin

Answer 14

allows big food chunks to be digested further

Question 15

how is chyme emptied

Answer 15

in a linear fashion

Question 16

Cholecystokinin is realsed by

Answer 16

duodenum and causes bile to be given to duo

Question 17

how does vagus know what to do

Answer 17

CCK tells it what to do

Question 18

explain the duodenal and jejunum brake

Answer 18

after high fat meal D releases CCK which tells vagus to slow down gastric ton

Question 19

explain ilium break

Answer 19

high fat levels in ilium release PYYY GLPI to slow down stomach.

Question 20

peristalsis direction

Answer 20

back end contracts

Question 21

what neurotransmitter does the enteric nervous system release for contraction and lrelaxation

Answer 21

contraction: ach
relaxation: no

Question 22

whats the histology of teniae carnae

Answer 22

3 longitudinal muscle

Question 23

what the affect of 5HT3 receptor antagonists

Answer 23

cause constipation

Question 24

as content in rectum increases what happens to the anal sphoncters

Answer 24

internal one relaxes

outer one contracts.

Question 25

what mechanisms prevent defecation

Answer 25

mechanical effects of acute anorectal angle

anal sphincter and puborectalis.

Question 26

whats the initiation phase

Answer 26

when shit comes out. external anal pspincter and puborectalis relax