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The stylomastoid foramen is a foramen between the styloid and mastoid processes of the temporal bone of the skull. It is the termination of the facial canal, and transmits the facial nerve, and stylomastoid artery. Facial nerve inflammation in the stylomastoid foramen may cause Bell's palsy.
The facial canal gives passage to the facial nerve (CN VII) (hence the name). [1] [verification needed] [better source needed] Its proximal opening is at the internal auditory meatus; its distal opening is the stylomastoid foramen. In humans, the canal is approximately 3 cm long, making it the longest bony canal of a nerve in the human body.
Upon emerging from the stylomastoid foramen, the facial nerve gives rise to the posterior auricular branch. It then gives rise to the branch to the posterior belly of the digastric, and then the branch to the stylohyoid. The facial nerve then passes through the parotid gland, which it does not innervate, to form the parotid plexus.
jugular foramen: 2: internal jugular vein, inferior petrosal sinus, sigmoid sinus: glossopharyngeal nerve (IX), vagus nerve (X), accessory nerve (XI) temporal: posterior cranial fossa: stylomastoid foramen: 2: stylomastoid artery: facial nerve (VII) occipital: posterior cranial fossa: hypoglossal canal: 2-hypoglossal nerve (XII) occipital ...
Tumour of facial nerve like schwannomas and perineuromas. Other tumours that can compress facial nerve along its course like congenital cholesteatomas, hemangiomas, acoustic neuromas, parotid gland neoplasms, or metastases of other tumors. Other causes like viral, bacterial or fungal infections like chicken pox, streptococcal infection or ...
The digastric branch of facial nerve provides motor innervation to the posterior belly of the digastric muscle. [1] [2] It branches from the facial nerve (CN VII) near to the stylomastoid foramen [1] as the CN VII exits the facial canal (it thus branches proximal to the parotid plexus of facial nerve). [2]
The tissues in the throat rub on the styloid process during the act of swallowing with resulting pain along the glossopharyngeal nerve. There is also pain upon turning the head or extending the tongue. Other symptoms may include voice alteration, cough, dizziness, migraines, occipital neuralgia, pain in teeth and jaw and sinusitis or bloodshot ...
The course and connections of the facial nerve in the temporal bone. Cranial nerves VII and VIII and selected structures of the inner and middle ear. 1 Nervus vestibularis , 2 Nervus cochlearis , 3 Nervus intermediofacialis , 4 Ganglion geniculi , 5 Chorda tympani , 6 Cochlea , 7 Ductus semicirculares , 8 Malleus , 9 Membrana tympani , 10 Tuba ...