On the question of the vasomotors of the frog lungs

Abstract

The Kazan Pharmacological Laboratory has been developing the issue of vasomotor nerves for many years.

Dr. M. Sergeev in 1890 published the first preliminary report (On the doctrine of blood circulation in Metbrapa nictitans Ranae Esculentae. Bulletin of Natural History No. 1. 1891), in which he states the fact that the irritation of the central segment n. ischiadici causes vasospasm in the Membrana nictitans of the same side, and in 1891 a second preliminary report under the same title in No. 9 of the Natural History Bulletin, where he describes the continuation of his experiments, which finally made it possible to establish the route of transmission of irritation from the central segment n. ischiadici on the vessels of Membranae nicitanis ranae esculentae.

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