Ernest Henry Starling

Ernest Henry Starling was a preeminent English physiologist whose pioneering work fundamentally shaped modern cardiovascular and endocrine physiology. His collaborative research with William Bayliss led to the discovery of the first hormone and the coining of the term itself. His elucidation of the forces governing fluid exchange in capillaries and the intrinsic regulation of the heart established foundational principles that remain central to medical science.

Early life and education

Born in London in 1866, he was the son of a lawyer and a mother from a family of Quakers. He initially studied history at King's College London before switching to medicine at Guy's Hospital Medical School, where he graduated with a gold medal in 1889. His early scientific training was profoundly influenced by the physiologist John Burdon-Sanderson at University College London, who ignited his passion for experimental research. He later earned his MD from the University of London in 1890, solidifying his transition from clinical practice to a career in physiological investigation.

Career and research

Appointed as a lecturer at Guy's Hospital in 1890, he soon moved to University College London, where he began his historic partnership with William Bayliss. In 1899, he became the Jodrell Professor of Physiology at UCL, a position he held for over two decades. His research career was marked by rigorous experimentation and a series of landmark discoveries spanning multiple organ systems. He was a founding member of the Medical Research Committee, the forerunner of the Medical Research Council, and served on the Royal Society's Food (War) Committee during the First World War. His work earned him the Royal Medal in 1913 and the prestigious Croonian Lecture in 1915.

Starling's law of the heart

In 1914, he delivered the Linacre Lecture at Cambridge University, formally presenting what became known as Starling's law of the heart. This principle states that the energy of contraction of the cardiac muscle is a function of the length of its fibers at the end of diastole. Essentially, the greater the volume of blood filling the heart, the greater the force of its subsequent contraction. This intrinsic mechanism, independent of nervous control, ensures that cardiac output matches venous return. The law, a cornerstone of cardiovascular physiology, was elucidated through experiments on heart-lung preparations and provided critical insights into conditions like heart failure.

Other contributions to physiology

His collaborative work with William Bayliss on the pancreas in 1902 led to the discovery of secretin, the first identified chemical messenger traveling via the bloodstream, for which they coined the term "hormone." He also made seminal contributions to understanding kidney function and the forces governing fluid balance. The Starling equation, describing the net filtration pressure across capillary walls, remains a fundamental principle in understanding edema and fluid compartment dynamics. His textbook, Principles of Human Physiology, co-authored with Charles Lovatt Evans, became a standard work for generations of medical students.

Personal life and legacy

He married a fellow physiologist, Florence Amelia Sieveking, in 1910, and they had four children. Known for his energetic and sometimes combative personality, he was a dedicated teacher and a fierce advocate for scientific research. He died suddenly of a tropical fever in 1927 while on a voyage to Jamaica. His legacy endures through the eponymous "Starling's law" and the "Starling equation," which are taught worldwide. The Physiological Society awards the annual Starling Prize, and his pioneering concept of hormonal regulation laid the very foundation for the field of endocrinology.

Category:English physiologists Category:1866 births Category:1927 deaths