What is the nasociliary nerve?

The nasociliary nerve is the sensory nerve to the eye. It enters the orbit through the superior orbital fissure, inside the cone formed by the muscles of the globe. It is on a lower plane, therefore, than the lacrimal and frontal nerves.

Where does the nasociliary nerve come from?

The nasociliary nerve is a branch of the ophthalmic nerve, itself a branch of the trigeminal nerve (CN V). It is intermediate in size between the other two branches of the ophthalmic nerve, the frontal nerve and lacrimal nerve.

What causes damage to ciliary ganglion?

Damage to the ciliary ganglion or the short ciliary nerves could be caused by local injury or disease and results in a tonic pupil, which is characterized by poor pupillary light response and loss of accommodation.

What goes through ciliary ganglion?

At the ciliary ganglion, preganglionic fibers synapse with postganglionic fibers. Postganglionic fibers pass through short ciliary nerve and end by supplying sphincter pupillae and ciliaris muscle. The sensory root derives from the nasociliary nerve. Sensory fibers from eyeball pass through ganglion uninterrupted.

How many parasympathetic ganglia are there?

Location of Autonomic Ganglia Parasympathetic ganglia which innervate targets in the head are located in four main ganglia: the ciliary, pterygopalatine, submandibular and otic ganglia. Scattered microganglia may also be distributed along cranial nerves.

What does the geniculate ganglion supply?

It receives fibers from the facial nerve. It sends fibers that supply the lacrimal glands, submandibular glands, sublingual glands, tongue, palate, pharynx, external auditory meatus, stapedius muscle, posterior belly of the digastric muscle, stylohyoid muscle, and muscles of facial expression.

Where is the geniculate ganglion located?

The geniculate ganglion is a collection of sensory neurons of the facial nerve, which is the seventh cranial nerve (CN VII). The ganglion is located in a bony structure that’s called the facial canal.

What are ganglion cysts on the wrist?

Ganglion cysts are lumps that most commonly develop in the wrist. They’re typically round or oval and are filled with a jelly-like fluid. Ganglion cysts are noncancerous lumps that most commonly develop along the tendons or joints of your wrists or hands. They also may occur in the ankles and feet.

What is the communicating branch of nasociliary nerve with ciliary ganglion?

The communicating branch of nasociliary nerve with ciliary ganglion (Sensory root of ciliary ganglion; Nasociliary root of ciliary ganglion; long root of the ciliary ganglion ( radix longa ganglii ciliaris )) usually arises from the nasociliary between the two heads of the Rectus lateralis.

How to tell if you have a ganglion cyst?

1 Location. Ganglion cysts most commonly develop along the tendons or joints of your wrists or hands. The next most common locations are the ankles and feet. 2 Shape and size. Ganglion cysts are round or oval and usually measure less than an inch (2.5 centimeters) in diameter. 3 Pain. Ganglion cysts usually are painless.

What causes a ganglion cyst on the nail?

Ganglion cysts can develop in anyone, but they most commonly occur in women between the ages of 20 and 40. Osteoarthritis. People who have wear-and-tear arthritis in the finger joints closest to their fingernails are at higher risk of developing ganglion cysts near those joints.