Flashcards in Final Exam GI Physiology: Exocrine Pancreas Deck (11):
1
What are the functions of the pancreas?
To dilute and buffer chyme to create an optimal pH
Hydrolyze proteins, carbs, lipids, and nucleic acids
2
What are the products of acinar cells?
Proteases- Trypsinogen, chymotrypsin, procarboxypeptidase
Pancreatic amylase
Pancreatic lipase
Less important: Cholesterolesterase, phospholipase, ribonuclease, deoxyribonuclease, electrolytes, GIF
3
What cells increase the HCO3- content of pancreatic fluid?
Ductular cells
4
What is acid tide?
Refers to the plasma leaving the pancreas
5
What do ductular cells do with Na+ and K+?
They reabsorb Na+ and secrete K+
6
The cephalic, gastric, and intestinal phases of the pancreas are all ___________.
Stimulatory
7
What controls the cephalic phase of pancreatic acinar cell secretion?
Stimuli: Sensory, Thought, Swallowing
8
What controls the gastric phase of pancreatic acinar cell secretion?
Gastrin and vagovagal reflex
9
What controls the intestinal phase of pancreatic acinar cell secretion?
CCK!! and secretin
10
What stimulates the vagovagal reflex?
H+, fat breakdown products, peptides, AAs
11