Nerve signals that help the parotid gland produce saliva start in the glossopharyngeal nerve. They pass through a small pathway (the tympanic and lesser petrosal nerves) until they reach a tiny ...

Three nerves carry taste signals to the brain stem: 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 ...