secretin

/sɪˈkriːtɪn/
noun
  1. A hormone produced by the small intestine that helps digestion by stimulating the pancreas and liver to release fluids.
    • Secretin is released when food enters the small intestine.
    • Doctors sometimes measure secretin levels to check how well the pancreas is working.
    • Without secretin, the body would have trouble digesting fats and proteins.