Crow Jean François Heymans

Crow Jean François Heymans (1892-1968). Toxicologist and Pharmacologist, it piles up a crowd of new knowledge in this field, in full élucidtion at that time, with the crossroads of the Chimie and the physiology: the Barorécepteur S (cells sensitive to the pressure blood), the Chimiorécepteurs (cells specialized in the reception of certain chemical substances messengers , the hypertension of nervous origin, the antagonistic substances of the Nicotine, curarizing drugs (i.e. for paralyzing purpose following the example Curare), and well of other.

But what returns celebrates Heymans, it is its masterly elucidation of the mechanisms of the operation of the Sinus carotidiens, discovered in 1923 by H.Ewald Hering. It is acted in fact of the bulge which the carotid presents interns immediately after the junction of the primitive carotid. It is there that are the terminations sensitive not only to the blood pressure (barorécepteurs as mentioned higher), but also - and it is there precisely the contribution of Heymans - with the composition of blood, in particular with its content of carbon dioxide (or carbon dioxide like the current nomenclature enjoint to say) and of other substances.

In fact the sines carotidiens collect information allowing the regulation of the pulse according to the content of blood CO2.

In 1938, Corneille Jean François Heymans obtains the Nobel Prize of physiology or medicine.

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