Does facial nerve pass through stylomastoid foramen?

Does facial nerve pass through stylomastoid foramen?

The facial nerve exits the facial canal via the stylomastoid foramen. The nerve travels between the digastric and stylohyoid muscles and enters the parotid gland.

Which foramen does the facial nerve pass through?

The facial nerve exits the base of the skull at the stylomastoid foramen, which is an opening in the bone located near the base of the ear.

What nerves go through the stylomastoid foramen?

The stylomastoid foramen transmits the facial nerve, and the stylomastoid artery.

What is the distribution of the facial nerve?

The nerve typically travels from the pons through the facial canal in the temporal bone and exits the skull at the stylomastoid foramen. It arises from the brainstem from an area posterior to the cranial nerve VI (abducens nerve) and anterior to cranial nerve VIII (vestibulocochlear nerve).

What is stylomastoid foramen?

The stylomastoid foramen is a small opening on the inferior surface of the petrous part of the temporal bone. It is situated between the base of the styloid process and the mastoid process.

What type of nerve is the vagus nerve?

mixed nerve
vagus nerve, also called X cranial nerve or 10th cranial nerve, longest and most complex of the cranial nerves. The vagus nerve runs from the brain through the face and thorax to the abdomen. It is a mixed nerve that contains parasympathetic fibres.

What does the stylomastoid artery do?

The stylomastoid artery extends through the stylomastoid foramen to supply structures of the middle and internal ear; bony tympanic cavity, mastoid antrum and semicircular canals. It also provides oxygenated blood to the facial nerve.

What does the stylomastoid artery supply?

The stylomastoid artery primarily supplies the posterolateral compartment, with possible contributions from posterior auricular and occipital arteries. The anterior tympanic artery supplies the anterior compartment, whereas the middle meningeal and accessory meningeal arteries supply the superior compartment.

What is the path of the vagus nerve?

Course. The vagus nerve runs from the brain through the face and thorax to the abdomen. Exits the brain from the medulla oblongata of the brainstem and travels laterally exiting the skull through the jugular foramen.

What is the stylomastoid foramen?

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 .

What nerve innervates the stylomastoid foramen?

Between the stylomastoid foramen, and the parotid gland, three more motor branches are given off: Posterior auricular nerve – Ascends in front of the mastoid process, and innervates the intrinsic and extrinsic muscles of the outer ear. It also supplies the occipital part of the occipitofrontalis muscle.

Where does the stylomastoid nerve exit the temporal bone?

Stylomastoid Foramen CN VII exits the temporal bone via the stylomastoid foramen, which is between the mastoid and styloid processes and deep to the posterior belly of the digastric. Almost immediately, the nerve enters the parotid gland.

What are the signs and symptoms of a stylomastoid lesion?

Depending on the site of the lesion, different combinations of symptoms and signs occur. A lesion at the stylomastoid foramen, for instance, paralyzes all muscles of facial expression.