Wilhelm His Jr. (29 December 1863 – 10 November 1934) was a

Swiss Swiss may refer to: * the adjectival form of Switzerland * Swiss people Places * Swiss, Missouri * Swiss, North Carolina *Swiss, West Virginia * Swiss, Wisconsin Other uses *Swiss-system tournament, in various games and sports *Swiss Internation ...

cardiologist Cardiology () is a branch of medicine that deals with disorders of the heart and the cardiovascular system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular hear ...

and

anatomist Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...

, son of

Wilhelm His Sr. __NOTOC__ Wilhelm His Sr. (9 July 1831 – 1 May 1904) was a Swiss anatomist and professor who invented the microtome. By treating animal flesh with acids and salts to harden it and then slicing it very thinly with the microtome, scientists were ...

In 1893, His discovered the

bundle of His The bundle of His (BH) or His bundle (HB) ( "hiss"Medical Terminology for Health Professions, Spiral bound Version'. Cengage Learning; 2016. . pp. 129–.) is a collection of heart muscle cells specialized for electrical conduction. As part of t ...

, the collection of specialized cardiac muscle cells in the

heart The heart is a muscular organ in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide t ...

that transmits electrical impulses and helps synchronize contraction of the

cardiac muscle Cardiac muscle (also called heart muscle, myocardium, cardiomyocytes and cardiac myocytes) is one of three types of vertebrate muscle tissues, with the other two being skeletal muscle and smooth muscle. It is an involuntary, striated muscle th ...

s. Later in life, as a professor of medicine at the

University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative o ...

, he was one of the first to recognize that "the heartbeat has its origin in the individual cells of heart muscle."

Werner–His disease Trench fever (also known as "five-day fever", "quintan fever" ( la, febris quintana), and "urban trench fever") is a moderately serious disease transmitted by body lice. It infected armies in Flanders, France, Poland, Galicia, Italy, Salonika, Ma ...

(or

trench fever Trench fever (also known as "five-day fever", "quintan fever" ( la, febris quintana), and "urban trench fever") is a moderately serious disease transmitted by body lice. It infected armies in Flanders, France, Poland, Galicia, Italy, Salonika, Ma ...

) was also named after him.

Angle of His The angle of His, also known as the esophagogastric angle, is the acute angle created between the cardia at the entrance to the stomach, and the esophagus. It helps to prevent acid reflux of stomach acid into the esophagus. It is commonly undevel ...

(or incisura cardiaca) was posthumously named after him by

Daniel John Cunningham Daniel John Cunningham M.D., D.C.L., LL. D. F.R.S., F.R.S.E. F.R.A.I. (15 April 1850 – 23 July 1909) was a Scottish physician, zoologist, and anatomist, famous for ''Cunningham's Text-book of Anatomy'' and ''Cunningham's Manual of Prac ...

in 1906.

Works

* ''Die Front der Ärzte'' . Velhagen & Klasing, Bielefeld .a.193
Digital edition
by the

University and State Library Düsseldorf The University and State Library Düsseldorf (german: Universitäts- und Landesbibliothek Düsseldorf, abbreviated ULB Düsseldorf) is a central service institution of Heinrich Heine University. Along with Bonn and Münster, it is also one of th ...

References

External links

* 1863 births 1934 deaths German cardiologists {{germany-med-bio-stub