gastric secretions-osmosis

Question 1

what is a food bolus partially digested into

Answer 1

chyme

Question 2

route of chyme

Answer 2

passes through pyrloci pshincter into duodeum

Question 3

how is the pancreas connected to the duodenum

Answer 3

pancreatic duct

Question 4

layers of stomach

Answer 4

mucosa
submucosa
muscularis externa
serosa

Question 5

what does the mucosa contain

Answer 5

glands with cells which scerete components of gastric juie

Question 6

what do parietal cells secrete and where are they located

Answer 6

in body of sotmach, secrete hcl

Question 7

HCL

Answer 7

strong acid which helps break down porteins

Question 8

chief cells

Answer 8

secre pepsinogen- inactive

Question 9

how is pepsin created

Answer 9

once pepsinogen is exposed to pepsin

Question 10

what do g cells secrete

Answer 10

gastrin

Question 11

where is gatsrin secreted into

Answer 11

blood stream

Question 12

what does gastrin enhance

Answer 12

hcl, pepsinogen ad contraction of stomach muscles

Question 13

what does the usbmucosa cintain

Answer 13

connective tissue
blood vessels
nerv

Question 14

what do the nerves connect to form

Answer 14

submucosal plexus of nerves

Question 15

role of submuocsal plexus of nerves

Answer 15

regulates gastric secretions and controls blood flow to stomach

Question 16

externa

Answer 16

contains 3 layers of muscle

Question 17

peristalsis

Answer 17

when the 3 layers of muscle contract in wave form s

Question 18

thickness in stomach

Answer 18

increases form orad to caudad to help push food towards pylroic sphincter

Question 19

which contorls the rate at which the stomach contracst

Answer 19

enteric nervous system

Question 20

what is composed of the ENS

Answer 20

myenteric and submucosal plexuses

Question 21

role of parasympathetic on ENS

Answer 21

increases gastric secretion anf motility

Question 22

sympa

Answer 22

inhibits hastrci secretion and motiltiy

Question 23

what do mechanoreceptors trigger the release of

Answer 23

gastrin from g cells in stomach

Question 24

what do mechanoreceptors sense

Answer 24

distnesion ins tomach from food

Question 25

what do high fat foods stimulate

Answer 25

release of CCK

Question 26

what is ccK released form

Answer 26

i cells in duodenum

Question 27

effect of cck

Answer 27

slows contractions to aid digestion

Question 28

what do s cells secrete

Answer 28

secretin

Question 29

function of secretin

Answer 29

Increases secretion of bicarbonate-rich fluid from pancreas and hepatic duct cells, decreases gastric acid secretion, trophic effect on pancreatic acinar cells

Question 30

what do d cells secrete

Answer 30

somatostatin

Question 31

function of somatostatin

Answer 31

Decreases acid and pepsin secretion, decreases gastrin secretion, decreases pancreatic enzyme secretion, decreases insulin and glucagon secretion inhibits trophic effects of gastrin, stimulates gastric mucous production