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Sunao Tawara (田原淳, Tawara Sunao^?, July 5, 1873 – January 19, 1952), M.D., Ph.D., was a Japanese pathologist.

Tawara was born in Ōita Prefecture and studied at the Imperial University in Tokyo, graduating in 1901 and receiving his degree of Doctor of Medical Science (医学博士, igaku hakushi^?) degree in 1908. The years 1903 to 1906 he spent in Marburg studying pathology and pathological anatomy with Ludwig Aschoff. It was here he undertook his important works on the anatomy and pathology of the heart. Upon returning to Japan he was appointed assistant professor of pathology at what is now Kyushu University in Fukuoka, obtaining full professorship in 1908.

Node of Tawara: a remnant of primitive fibers found in all mammalian hearts at the base of the interauricular septum, and forming the beginning of the auriculoventricular bundle or bundle of His, which is a muscular band, containing nerve fibers, connecting the auricles with the ventricles of the heart. The Node of Tawara is also called the atrioventricular node, the auriculoventricular node, Aschoff's node, and the node of Aschoff and Tawara.

[edit] External links

• 田原　淳（たはら　すなお）　－心臓の電気的刺激伝導系の発見者 (Written in Japanese)
• On the German Manuscript of S. Tawara's The Conduction System of the Mammalian Heart (Written in Japanese, with German quotations)
• Kurzbiographie whonamedit engl.
• Geschichte der Entdeckung der kardialen Erregungsleitung (m. Portrait, S. 2778) engl.

v • d • e National Seven Universities (Japan) Hokkaido • Kyoto • Kyushu • Nagoya • Osaka • Tohoku • Tokyo

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