the chorda tympani nerve (from the front of the tongue), the glossopharyngeal nerve (from the back of the tongue) and the vagus nerve (from the throat area and palate). In addition, the trigeminal ...

Sensory receptors that initiate swallow reflex are present only in post part of the oral cavity and upper portion of pharynx. The afferents are carried in glossopharyngeal (IX) and vagus (X) nerves.