GI 8: Hepatic, Pancreatic and Intestinal Secretions

Question 1

small intestine secretions come from the ___

Answer 1

crypt of Lieberkuhn

Question 2

goblet cells secrete ___

Answer 2

mucous

Question 3

paneth cells secrete ___ and are capable of ___

Answer 3

lysozymes; phagocytosis

Question 4

enteroendocrine cells secrete the hormones __, ___ or ___

Answer 4

secretin; cholecystokinin ; GIP

Question 5

secreti is secreted by )__ cells

Answer 5

s

Question 6

CCK is secreted by ___ cells

Answer 6

I

Question 7

GIP is secreted by ___ cells

Answer 7

K

Question 8

the pH of secretions of the small intestine is slightly ___

Answer 8

alkaline

Question 9

secretions of the small intestine are mostly regulated by local reflexes w/I the ENS initiated by __ or ___ stimuli

Answer 9

irritative or tactile

Question 10

bile is a substance produced by the __, stored in the __ and secreted in the ___

Answer 10

liver; gallbladder; small intestine

Question 11

bile contains what 6 components?

Answer 11

1. bile salts
2. lecithin
3. HCO3
4. cholesterol
5. bilirubin
   trace metals

Question 12

what is the function of bile salts and lecithin?

Answer 12

solublize and emulsify fat

Question 13

what s the function of bicarbonate?

Answer 13

neutralize stomach acid

Question 14

what is the function of cholesterol, bilirubin, trace metals?

Answer 14

excreted as waste in faces

Question 15

what are the 3 main bile functions?

Answer 15

1. lipid emulsion
2. pH
3. waste excretion

Question 16

jaundice is caused by an excess of __

Answer 16

bilirubin

Question 17

parasympathetic vagus nerve and ENS stimulation induces ____ by the liver and release of bile from the ___

Answer 17

production; gallbladder

Question 18

secretin, produced by the ____, triggers the bile ___ in the liver

Answer 18

duodenum; synthesis

Question 19

CCK produced by the ___ triggers the contraction of the ___ and the relaxation of the ___, resulting in the release of bile

Answer 19

duodenum; gallbladder; sphincter of oddi

Question 20

95% of bile salts are reabsorbed in the ___ and are returned to the liver, where they will trigger___

Answer 20

ileum; more secretion of bile

Question 21

t/f both the gallbladder and pancreas use the sphincter of oddi

Answer 21

true

Question 22

pancreatic secretions have what 2 components?

Answer 22

aqueous and enzyme rich

Question 23

the aqueous component of pacreatic secretions is produced by the ___ cells and contains HCO3- that neutralize acidic chymeand pepsin while activating pancreatic enzyme

Answer 23

duct

Question 24

___ cells produce the enzyme rich components of pancreatic secretions

Answer 24

acinar

Question 25

HCO3 crosses the apical memnbrane by the ___ transporter

Answer 25

Na/HCO3

Question 26

trypsin and chymotrypsin break down ___

Answer 26

proteins

Question 27

pancreatic amylase breaks down the ___

Answer 27

carbs

Question 28

procolipase most be activated by_____ to ____ to help break down lipids

Answer 28

trypsin; colipse

Question 29

trypsinogen is activate by ____ and it becomes activate d in ______

Answer 29

enteropeptidases; duodenum

Question 30

____ enzyme can further catalyses the reactions: trypsinogen to trypsosin, procarbboxypeptidases to phospholipase and phospholipase to phospholipase

Answer 30

trypisin

Question 31

acidic chyme stimulates the release of ___

Answer 31

HCO3-

Question 32

peptides in the duodenum stimulate the release of ___

Answer 32

enzymes

Question 33

lipids (soap) in the duodenum stimulates the release of ___

Answer 33

HCO3

Question 34

both secretin and CCK ____ (decrease/increas) gastric sole

Answer 34

decrees

Question 35

SECRETIN STIMULATES THE ____ OF THE BILE AND THE CCK STIMULATES THE ___ FROM THE VISUAL FELLING

Answer 35

release