CME INDIA Presentation by ⚜ Dr. M. Gowri Sankar, MD, Senior Assistant Professor, Dept. of General Medicine, Government Medical College and ESI Hospital, Coimbatore.

Today’s History Feature:

Dr. Johannes Peter Muller

(Jul 14, 1801 – Apr 28, 1858)

💠German Physiologist

His contributions…

🔹Muller was born as the son of shoemaker. He was very talented at his young age and made his own translation of Aristotle.

🔹Then he studied medicine at the University of Bonn, Germany in 1819. After his studies, he started working as a lecturer in Physiology and Comparative anatomy at the University of Bonn.

🔹Later he became a Professor of anatomy and physiology in University of Berlin, Germany.

🔹Muller contributed in numerous Domains of physiology, especially in Speech, voice and hearing as well as in Physical and chemical properties of blood, chyle and lymph.

🔹Moreover, he carried out the comparative physiology of human and animal visual sense and eye movements.

🔹He was the first to describe the relationship between Accommodation and Vergence, and Accomodative Esotropia in 1826.

🔹Dr. Theodor Schwann, a German physiologist spent four years under the guidance of Dr. Muller and with his support in his experimental work, he discovered the Schwann cells.

🔹Muller also encouraged aspiring physiologists like Charles Bell and Magendie on their experimental work. Muller confirmed their work, and this led them to introduce the “Bell-Magendie Law.”

🔹His eponyms…

🔅 Muller Duct – also called para mesonephric duct.

🔅 Muller Tubercle – first evidence of embryonic uterus and vagina.

🔅 Muller Maneuver – reverse of Valsalva maneuver.

🔅 Muller’s Law – each type of specific nerve ending gives rise to its own specific sensation.

🔹Additionally, he authored the two-volume book “Elements of Physiology,” which was published in 1837 and 1840. It was a leading textbook of physiology in the 19th century.

🔹Consequently, Dr. Muller is considered the Father of German Physiology and as a teacher he inspired a generation of researchers such as Hermann von Helmholtz, who invented Ophthalmoscope and Rudolf Virchow, an eminent pathologist.

A Day to Commemorate

The Greatest Experimental Physiologist of 19th century

Dr. Johannes Peter Muller 🙏

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