Ernest Henry Starling, English physiologist, early 20th century.
© Science Museum / Science & Society Picture Library
Studio portrait photograph by Fradelle & Young. Starling. After qualifying in medicine in 1889, Starling (1866-1927) was appointed lecturer in physiology at Guy's Hospital, London. He collaborated with Sir William Baylis (1860-1924) whilst at University College (1899-1927) and together they discovered the pancreatic secretion 'secretin', coining the word 'hormone' to describe it. The term 'Starling's law of the heart' came from the investigative work he made on the mechanisms of cardiac activity and the circulation. Starling wrote many influential texts including 'Principles of Human Physiology' (1912).