Compact summary, including a table explaining all the enzymes

Summary
All products (enzymes/hormones/cells/etc.) discussed:
Product Kind Is from Is from Function
(tissue) (cell)

Amylase Enzyme Mouth/saliva CHO digestion

Lipase Enzyme fat digestion

HC Enzyme binds with vitamin B12 to
(haptocorrin) protect it from the
stomach's pH: HC is
absorbed in duodenum
and replaced with IF

HCO3 Enzyme Stomach: Surface/ restoring pH
(bicarbonate) Cardia/LES neck cells

Mucus Slime Surface/ lubrication
neck cells

Gastrin Enzyme Stomach: G cell stimulates secretion of
Fundus/body pepsinogen and H+

Pepsin(ogen) Endopeptida Chief cells pH in stomach makes this
se to pepsin which does the
primary structure protein
digestion (but pepsin is
always present in
stomach)

Lipase Enzyme Chief cells triglyceride digestion (10%
is now free FA’s); free FA
in stomach stimulate
duodenum to produce
CCK

H+ Acid Parietal < pH; protein digestion
cells

IF (intrinsic Enzyme Parietal binds with vitamin B12 in
factor) cells duodenum to be absorbed
in ileum together and
stored in liver

Mucus Slime Surface/ lubrication
neck cells

Ghrelin (growth) made hungry hormone, growth
hormone: from DNA hormone; made when
very small fasting and <BMI.
protein and

, HCI acid conversion of pepsinogen
to pepsin, killing bacteria,
optimize pH

- - - alcohol absorption

HCO3 Enzyme Stomach: Surface/ restore pH
(bicarbonate) Antrum/ neck cells
pylorus
Mucus Slime Surface/ lubrication
neck cells

Somatostatin ? D cell sensor when pH is too low;
the D cell starts
somatostatin production;
which binds to G cell;
which then stops gastrin
production; which stops
acid production.

Trypsin Endopeptida Pancreas: is activated by
se Acinus enterokinase at brush
border; does protein
digestion + active trypsin
makes all digestive
proenzymes into active
enzymes.

Monitor peptide Amino acid - monitoring protein
digestion in duodenum: as
long as it’s active it
activates the cells to
release CCK (if trypsin
does a good job CCK
production stops).

Amylase Enzyme CHO digestion

Lipase Enzyme fat digestion

Phospholipase Enzyme fat digestion

Chymotrypsin Endopeptida protein digestion
se

Elastin Endopeptida digestion
se

Dipeptidase Enzyme protein digestion

Disaccharidase Enzyme digestion

HCO3 Enzyme Pancreas: secretin and Ach in the
(bicarbonate) Ductule ductule are stimulating to
release bicarbonate when
active digestive enzymes