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. Louis Ranvier
(Oct 2, 1835 – Mar 22, 1922)
💠French Anatomist & Histopathologist
His contributions…
🔹Ranvier studied medicine at Lyon and graduated in 1865. After his studies, he joined to work under Dr. Claude Bernard, a French physiologist, who was one of the founders of Experimental Medicine. Later, he became a chair of anatomy in 1875.
🔹Subsequently, Dr. Ranvier became a prominent figure in the field of histology due to his extraordinary work. He further collaborated with his close friend Dr. Andre Victor Cornil and established a private laboratory.
🔹There, they conducted courses in histology for medical students. Dr. Cornil educated pathological anatomy, whereas, Dr. Ranvier taught normal anatomy.
🔹In fact, his dynamic way of approaching the study of microscopic anatomy popularized his laboratories as a World centre for students of histology.
🔹His Eponyms…
🔅 Nodes of Ranvier – A constriction in the myelin sheath that encases nerve fibres, occurring at regular intervals along their length
🔅 Ranvier’s Segment – The portion of a myelinated nerve fibre between two nodes of Ranvier
🔅 Merkel-Ranvier Cells – Melanocyte like cells in the basal layer of the epidermis which contains catecholamine granules
🔅 Ranvier’s Tactile Disks – A special type of sensory nerve endings
🔅 Ranvier’s Plexus – A sub-basal stroma plexus of the cornea
🔹Furthermore, Dr. Ranvier and Dr. Cornil jointly wrote the famous text book Manual of Pathological Histology in 1869, which became a milestone of 19th-century medicine.
A Day to Commemorate…
An Eminent Histopathologist of 19th Century
Dr. Louis Ranvier 🙏🏼
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