03a Upper GI Phys and Biochem Flashcards
1
Q
Salivary defenses
A
Peroxidase Lactoferrin IgA Defensins Mucins
2
Q
Lysozyme
A
Breaks B-1-4 linkages in Gram pos bacteria and fungi
3
Q
peroxidase
A
Salivary creater og antimicrobial bromide and iodide
4
Q
Lactoferrin
A
Iron binder in saliva
5
Q
Defensins
A
Proteins that form pores on bacterial cell walls
6
Q
Salivary HCO3
A
Neutralize bacteria not affected by Lysozyme (gram negs)
7
Q
ACH function in stomach
A
^ ECL histamine, parietal cell HCL
inhibits D-cell somatostatin
8
Q
GRP
A
Gastric releasing peptide
- stimulates gastrin secretion
9
Q
Somatostatin
A
D cell secretion in response to gastrin, HCl, Ach
*Inhibits gastrin, histamine and HCL
10
Q
Pepsinogen
A
Enzyme that degrades protein-
^ by ACh,Gastrin, Secretin, CCK
11
Q
Mucins
A
Physical barrier, O-glycosylated glycoproteins
