It is found within the scala tympani and scala vestibuli of the cochlea. Two small muscles, the tensor tympani and stapedius, also help modulate noise. The fibers of the chorda tympani travel with the lingual nerve to the submandibular ganglion. Both the scala vestibuli and the scala tympani contain an extracellular fluid called perilymph. The chorda tympani innervates the fungiform papillae on the tongue. Under the organ of Corti is the scala tympani and above it, the scala vestibuli. The tensor tympani acts to dampen the noise produced by chewing. He took up playing percussion and found a niche with the tympani drum. The tensor tympani is a muscle that is present in the middle ear. The second parasympathetic branch that leaves the facial nerve is the chorda tympani. It involves a decrease in the contraction threshold of the tensor tympani. The perilymph in the scala tympani has a very low concentration of positive ions. These have alternate pointed and semicircular tympani. White also wrote the section where the drums incorporate the tympani towards the end. These are the horizontal portion of the facial nerve and the chorda tympani.