2.4 digestion + specialised cells in gastric gland Flashcards
1
Q
what are endopeptidases
A
hydrolyse internal peptide bonds within a protein
cuts protein to make smaller polypeptides
2
Q
what are exopeptidases
A
hydrolyse end amino acids at either end of the small polypeptide chain
3
Q
name 3 specialised cells in the gastric glands
A
- goblet/mucous cells
- oxyntic cells
- chief/peptic cells
4
Q
what is the function of goblet/mucous cells
A
produce mucus
5
Q
what is the function of oxyntic cells
A
produce hydrochloric acid
6
Q
what is the function of chief/peptic cells
A
- produce pepsinogen(inactive form of peptidase) - activated by HCl in stomach
7
Q
why is it important that pepsinogen is inactive
A
to prevent enzymes from digesting tissue
8
Q
A
