What passes through ciliary ganglion?
The axons pass through the ganglion and enter the eye without synapsing into the short ciliary nerves. The sympathetic root contains the postganglionic sympathetic axons that provide sympathetic supply to the blood vessels of the eye.
What is 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.
What is the main function of the ciliary plexus?
This plexus of densely interwoven nerve fibers is said to contain autonomic ganglion cells’ and sends terminal branches to supply the smooth ciliary muscle, the ciliary processes, the iris, the corneoscleral trabeculum, and the cornea.
What is parasympathetic ganglion?
Parasympathetic ganglia are the autonomic ganglia of the parasympathetic nervous system. Most are small terminal ganglia or intramural ganglia, so named because they lie near or within (respectively) the organs they innervate. The exceptions are the four paired parasympathetic ganglia of the head and neck.
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.
Is the ciliary ganglion sympathetic?
The sympathetic root of ciliary ganglion is one of three roots of the ciliary ganglion. It contains postganglionic sympathetic fibers whose cell bodies are located in the superior cervical ganglion. Their axons ascend with the internal carotid artery as a plexus of nerves, the internal carotid plexus.
What is Charlin neuralgia?
Sometimes a painful neuroma of the nerve stump can result in a condition called Charlin`s syndrome (also called nasal neuralgia). Charlin’s syndrome is characterized by head, facial, and eye pain, as well as severe nasal discharge and congestion.
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.
Where do short ciliary nerves come from?
The short ciliary nerves arise from the ciliary ganglion and carry sensory (from nasociliary), sympathetic and parasympathetic fibres (derived predominantly from nerve III, but also from VII).
Where are parasympathetic located?
Parasympathetic nervous system consists of the cranial and the sacral components (Purkayastha et al., 2013). The cell bodies of parasympathetic preganglionic fibers are located in the ganglia associated with oculomotor, facial, glossopharyngeal and vagus nerves and in the spinal cord segments S2–S4.
Is ciliary ganglion parasympathetic?
Ciliary ganglion is a peripheral parasympathetic ganglion. It is situated near the apex of orbit between the optic nerve and lateral rectus muscle.