The deep petrosal nerve is a branch from the internal carotid plexus. The plexus is located on the lateral side of the internal carotid as it courses superiorly. The deep petrosal enters the skull through the carotid canal with the internal carotid artery.

Is Deep Petrosal sympathetic?

The deep petrosal nerve transmits post-ganglionic sympathetic fibers from the internal carotid plexus to the Vidian nerve on its way to the pterygopalatine ganglion.

What is the lesser petrosal n?

The lesser petrosal nerve (also known as the small superficial petrosal nerve) is the general visceral efferent (GVE) component of the glossopharyngeal nerve (CN IX), carrying parasympathetic preganglionic fibers from the tympanic plexus to the parotid gland.

What is the lesser Petrosal a branch of?

The lesser petrosal nerve (Figure 26.3) is a continuation of the presynaptic fibers of the tympanic branch of the glossopharyngeal nerve with contributions from the nervus intermedius part of the facial nerve, and the auricular branch (Alderman’s or Arnold’s nerve) of the vagus nerve.

What does the greater petrosal nerve supply?

The primary function of the greater petrosal nerve is to supply parasympathetic fibers to the nerves that travel from the pterygopalatine ganglion to structures of the mouth, throat, nasal passages, and eyes.

What does deep Petrosal do?

The deep petrosal nerve carries postganglionic sympathetic axons to the pterygopalatine ganglion, which pass through without synapsing. These axons innervate blood vessels and mucous glands of the head and neck.

Is deep petrosal nerve parasympathetic?

The deep petrosal nerve is a branch from the internal carotid plexus. The vidian nerve carries parasympathetic and sympathetic fibers through the pterygoid canal to the pterygopalatine ganglion, otherwise known as the sphenopalatine ganglion.

What is a Petrosal?

Definition of petrosal

: of, relating to, or situated in the region of the petrous portion of the temporal bone or capsule of the inner ear.

What is petrosal nerve?

The greater petrosal nerve or superficial petrosal nerve is a branch of the nervus intermedius (nerve of Wrisberg) that carries parasympathetic, taste, and sensory fibers of the facial cranial nerve (CN VII).

What is the Glossopharyngeal?

The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.

What is foramen ovale skull?

Foramen ovale (plural: foramina ovalia) is an oval shaped opening in the middle cranial fossa located at the posterior base of the greater wing of the sphenoid bone, lateral to the lingula.

Where is the otic ganglion?

The otic ganglion is a small peripheral parasympathetic ganglion residing immediately below the foramen ovale. It is related topographically to the mandibular nerve but is functionally related to the glossopharyngeal nerve.

What is the foramen Rotundum?

The foramen rotundum (plural: foramina rotunda) is located in the middle cranial fossa, inferomedial to the superior orbital fissure at the base of greater wing of the sphenoid bone. Its medial border is formed by lateral wall of sphenoid sinus.

Where does the greater petrosal nerve come from?

the greater petrosal nerve, which comes from the facial nerve and runs through the hiatus on the anterior surface of the petrous portion of the temporal bone. a communicating branch with the greater petrosal nerve, which comes from the tympanic cavity, having originated at the glossopharyngeal nerve.

How many Petrosal nerves are there?

Six petrosal nerves have been described: exter- nal, deep, small deep, smallest deep, greater, and lesser. One of these is a branch of the facial nerve, one is a branch of the glossopharyngeal nerve, and four are derived from sympathetic fibers.

What Innervates lacrimal gland?

Innervation. The lacrimal gland receives sensory, parasympathetic, as well as sympathetic innervation. The lacrimal nerve, from the ophthalmic branch of the trigeminal nerve provides sensory innervation to the gland. Parasympathetic secretomotor neurons stimulate the secretion of lacrimal fluid.

What muscles does facial nerve innervate?

Special visceral efferent (SVE) fibers (branchiomotor) are a major component of the facial nerve. Their function is to innervate the muscles of facial expression, the stapedius muscle, the stylohyoid muscle, and the posterior belly of the digastric muscle.

What is the internal carotid plexus?

The internal carotid plexus provides postganglionic sympathetic innervation from the superior cervical plexus. The visceral efferent fibers supply parasympathetic innervation. In the head, the four pairs of autonomic ganglia are the ciliary, pterygopalatine, otic, and submaxillary ganglia.

What is geniculate ganglion?

The geniculate ganglion is a sensory ganglion of the facial nerve (CN VII). It contains the cell bodies of the fibers responsible for conducting taste sensation from the anterior two-thirds of the tongue.