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The labyrinthine segment is the shortest and narrowest segment of the facial nerve and ends where the facial nerve forms a bend known as the geniculum of the facial nerve (genu meaning knee), which contains the geniculate ganglion for sensory nerve bodies. The first branch of the facial nerve, the greater petrosal nerve, arises here from the ...
The temporal branch of the facial nerve is typically found between the temporoparietal fascia (i.e., superficial temporal fascia) and temporal fascia (i.e., deep temporal fascia). This layer is also known as the innominate fascia. There are several methods using anatomic landmarks that may be used to find the temporal branch of the facial nerve.
The zygomatic branches of the facial nerve (malar branches) are nerves of the face.They run across the zygomatic bone to the lateral angle of the orbit.Here, they supply the orbicularis oculi muscle, and join with filaments from the lacrimal nerve and the zygomaticofacial branch of the maxillary nerve (CN V 2).
Thus the facial artery can be used as an important landmark in locating the marginal mandibular nerve during surgical procedures. [2] Damage can cause paralysis of the three muscles it supplies, which can cause an asymmetrical smile due to lack of contraction of the depressor labii inferioris muscle . [ 3 ]
The buccal branches of the facial nerve (infraorbital branches), are of larger size than the rest of the branches, pass horizontally forward to be distributed below the orbit and around the mouth. Branches
Cervical branch of the facial nerve; Cervical plexus; Chorda tympani; Ciliary ganglion; Coccygeal nerve; Cochlear nerve; Common fibular nerve; Common palmar digital nerves of median nerve; Deep branch of the radial nerve; Deep fibular nerve; Deep petrosal nerve; Deep temporal nerves; Diagonal band of Broca; Digastric branch of facial nerve ...
Its parasympathetic root is derived from the nervus intermedius (a part of the facial nerve) through the greater petrosal nerve.. In the pterygopalatine ganglion, the preganglionic parasympathetic fibers from the greater petrosal branch of the facial nerve synapse with neurons whose postganglionic axons, vasodilator, and secretory fibers are distributed with the deep branches of the trigeminal ...
The facial nerve exits the cranial cavity through the internal acoustic meatus and enters the facial canal. Within the facial canal, chorda tympani branches off the facial nerve and enters the lateral wall of the tympanic cavity within the middle ear, where it runs across the tympanic membrane (from posterior to anterior) and medial to the neck ...