We secrete 3 main things, lubricants (water and mucus), Enzymes, Acid, Electrolytes, absorption aids, and Hormone. Exocrine is things that go outside the body and endocrines are things that go inside the body
Endocrine secretions
Gastrin, secretin, cholecystokinin, gastric inhibitory peptide and somatiostatin.
Peptides are secreted by enterochromaffin cells
They co-ordinate and control motility and secretion
Exocrine secretion
water /electrolutes mucus enzymes prepare foods for absorption by dilution optimising pH digestion lubricate luminal contatns protect mucosa
secretion via epithelia