A STUDY OF THE SENSORY AREAS ELICITING THE SWALLOWING REFLEX

Abstract

From the data presented it appears that the areas in the pharynx, mechanical stimulation of which will initiate the swallowing reflex, vary considerably in different individuals, and that to no single area can be ascribed the exclusive power of causing the act. The anterior pillars of the fauces, however, appear to be notably effective in instituting the swallowing reflex. The posterior pharynx and the posterior pillars were next in order of sensitiveness. The uvula and soft palate were relatively insensitive as far as this reflex was concerned. Cocainization of different areas in the pharynx bore out the above conclusions. The posterior pillars and the sinus tonsillaris were also noticeably affected by cocain, but to a less extent than the anterior pillars. There was very little impairment to swallowing when the uvula, soft palate, and the base of the tongue and posterior wall of pharynx were cocainized.