exocrine pancreas

Question 1

secretory granules of the exocrine pancreas contain digestive enzymes for (3)

Answer 1

1. carbohydrates
2. protein
3. fats

Question 2

pancreatic juice is composed of two secretory products critical for proper digestion

Answer 2

digestive enzymes and bicarb

Question 3

when the pancreas is stimulated by CCK and secretin the flow generated by the _____ and ___ increases substantially. However, the majority of the increased flow is contributed by the ____

Answer 3

when the pancreas is stimulated by CCK and secretin the flow generated by the acinar and ducts increases substantially. However, the majority of the increased flow is contributed by the ducts

Question 4

phase begins prior to food entry and it is where there is salivary gland secretion

Answer 4

cephalic phase

Question 5

begins with the arrival of food in the stomach

Answer 5

gastric phase

Question 6

begins as partially digested food enters the duodenum

Answer 6

intestinal phase

Question 7

enzyme secretion is the highest in which phase

Answer 7

intestinal phase

Question 8

pancreatic secretion sequence

Answer 8

1. Parasympathetic impulses along vagus (X) nerves
2. Ach stimulates secretion of pancreatic enzymes
3. acidic chyme containing partially digested fats and proteins stimulates the release of CCK and secretin

Question 9

secretin stimulates ____ cell to secrete pancreatic juice rich in _______

Answer 9

secretin stimulates ductal cell to secrete pancreatic juice rich in bicarb ions

Question 10

CCK stimulates ____ cell to secrete pancreatic juice rich in _______

Answer 10

CCK stimulates acinar cell to secrete pancreatic juice rich in digestive enzymes

Question 11

CCk secretion is strongly stimulated by

Answer 11

the presence of partially digested proteins and fats in the small intestine

Question 12

this hormone is secreted by enteric endocrine I cells located in the duodenum

Answer 12

CCK

Question 13

pancreatic enzymes are functionally active when secreted

Answer 13

nope- some pancreatic enzymes are functionally active when secreted and some are not

proteolytic enzymes are not active

Question 14

the amount of trypsin inhibitor secreted by the pancreas is small in comparison to the amount of trypsin that is activated in the small intestine

Answer 14

yep

Question 15

trypsinogen is cleaved by

Answer 15

cell membrane intrinsic protein

Question 16

a major component of dietary fat is ______

Answer 16

triglycerides

Question 17

no vertebrate cell has been identified that produces an enzyme that hydrolyzes cellulose

Answer 17

yep

Question 18

alpha amylase

Answer 18

enzyme that hydrolyses starch to simples sugars

Question 19

secretin is secreted from S cells in response to

Answer 19

acid-laden chyme

Question 20

which group only work through (1) vago-vagal reflex (2) CCK release to increase enzyme and bicarb secretion and not (3) secretin release

Answer 20

amino acids/peptides

• fatty acids and H+ elicit their response by all three mechanisms

Question 21

vasovagal reflex.. what is it?

stimulated by

Answer 21

increases enzyme release from acinar cells

stimulated by: peptides/aa, fats and H+

Question 22

CCK..what does it do?

stimulated by?

Answer 22

increases enzyme release from acinar cells

stimulated by: peptides/aa, fats and H+

Question 23

secretin…. what does it do?

stimulated by?

Answer 23

increases fluid and bicarb by ductal cells

stimulated by: fats and H+