The glossopharyngeal nerve may carry afferent fibres which provide pathways for the laryngeal reflex. Evidence is presented which suggests that volatile anaesthetics may stimulate effects at the carotid bodies, which are innervated by the sinus nerves (branches of the glossopharyngeal nerve). Experiments were carried out on cats in which the effects of intravenous injections of solutions of ether and hydrogen cyanide were compared.
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