🔬 Discovery

Hormones and internal secretion (secretin)

Hormonas: secretina y el concepto de secreción interna

Date
1902-1905 · confidence high
Place
University College London, England
Credited to
William Bayliss and Ernest Starling; Claude Bernard and Brown-Séquard as precursors
People
👤 Charles-Édouard Brown-Séquard1817–1894👤 Claude Bernard1813–1878👤 Ernest Starling1866–1927👤 William Maddock Bayliss1860–1924
Field
Life & health

What was discovered

They demonstrated that the intestine releases a substance (secretin) into the blood that stimulates the pancreas without nervous involvement. Starling coined 'hormone' in 1905: chemical messengers that coordinate the body.

What it led to

  • endocrinology
  • isolation of adrenaline, thyroxine, insulin, steroids
  • hormone therapies and contraceptives
  • neuroendocrinology
🕸️ View in the graph

Built on

Made possible

📄 Original publication

The mechanism of pancreatic secretionW. M. Bayliss, E. H. Starling · The Journal of Physiology · 1902

Links