Secretin is a hormone, whereas pepsin is an enzyme.
What is secretin?
- Secretin is a hormone that regulates water homeostasis throughout the body and influences the environment of the duodenum by regulating secretions in the stomach, pancreas and liver.
- Peptide hormone produced in the S cells of the duodenum
What is pepsin?
- Pepsin is a stomach enzyme that serves to digest proteins found in ingested food.
- It is secreted in inactive form (zymogen) celled pepsinogen by Gastric chief cells.
Learn more about enzymes and hormones here:
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