Facial Nerve Flashcards
Describe the intracranial route of the facial nerve
Pons, IAM, facial canal where it forms geniculate ganglion, exits cranium via stylomastoid foramen
Describe the extracranial course of the facial nerve
Runs ant to outer ear, terminates in parotid gland
What three branches are given off intracranially?
Greater petrosal
Nerve to stapedius
Corda tympani
What three branches are given off extracranially before entering the parotid gland?
Post auricular
Nerve to digastric
Nerve to stylohyoid
What five branches does the facial nerve terminate into in the parotid gland?
Temporalis Zygomatic Buccal Marginal mandibular Cervical
What does the temporal nerve supply?
Frontalis, obicularis occuli, corrugated supercili
What does the zygomatic nerve supply?
Obicularis occuli
What does the buccal nerve supply?
Obicularis oris, buccinator, zygomaticus
What does the marginal mandibular nerve supply?
Mentalis
What does the cervical nerve supply?
Platysma
What innervates stapedius?
Nerve to stapedius
What does the nerve to digastric innervate?
Post belly of digastric
What does post auricular innervate?
Intrinsic and extrinsic muscles of outer ear
What does nerve to stylohyoid innervate?
Stylohyoid!
What does chorda tympani innervate? What does it hitchhike with?
Ant 2/3 tongue- SPECIAL SENSORY
Lingual nerve
What does greater petrosal innervate?
Lacrimal gland
Mucous glands of oral cavity, nose and pharynx
