The lesser petrosal nerve comes from the tympanicplexus running between cochlear window and vestibular window, over recess of tensor sympani muscle and toward otogaglion .
岩小神经由鼓室神经丛发出后，穿过耳蜗窗与前庭窗之间，越过鼓膜张肌窝，走向耳神经节。
2
Only general description of autonomic nerves in swine head was found in literatures at home and from abroad, and a description of swine tympanicplexus in detail had not been found.