CILIARY GANGLION Meaning and
Definition
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The ciliary ganglion is a small spherical structure located within the orbit of the eye, specifically behind the eyeball, between the optic nerve and the lateral rectus muscle. It functions as an integral part of the autonomic nervous system, serving as a relay station for certain nerve fibers that innervate various structures of the eye.
The ganglion consists of specialized nerve cells known as ganglion cells, which are clustered together and connected by nerve fibers. These ganglion cells receive input from two main sources: the preganglionic fibers of the autonomic nervous system and the sensory fibers that arise from the ciliary body and cornea of the eye.
The preganglionic fibers, originating from the superior cervical ganglion, travel through the long ciliary nerves to reach the ciliary ganglion. Here, they synapse with the ganglion cells, which in turn give rise to postganglionic fibers. These postganglionic fibers travel through the short ciliary nerves to reach their target structures, including the smooth muscle fibers of the ciliary body for accommodation and the sphincter muscle of the iris for pupil constriction.
Overall, the ciliary ganglion plays a crucial role in regulating various autonomic functions within the eye, such as controlling the shape of the lens and the size of the pupil. Its intricate connections and functions make it a significant component in ensuring optimal visual acuity and maintaining proper eye health.
Common Misspellings for CILIARY GANGLION
- xiliary ganglion
- viliary ganglion
- filiary ganglion
- diliary ganglion
- culiary ganglion
- cjliary ganglion
- ckliary ganglion
- coliary ganglion
- c9liary ganglion
- c8liary ganglion
- cikiary ganglion
- cipiary ganglion
- cioiary ganglion
- ciluary ganglion
- ciljary ganglion
- cilkary ganglion
- ciloary ganglion
- cil9ary ganglion
- cil8ary ganglion
- cilizry ganglion
Etymology of CILIARY GANGLION
The word "ciliary ganglion" is derived from the Latin word "cilia" which means "eyelashes" or "small hairs", and "ganglion" which refers to a collection of nerve cell bodies. The term "ciliary" refers to the ciliary muscle and ciliary processes found in the eye, while "ganglion" indicates a cluster of nerve cells. The ciliary ganglion is a small parasympathetic ganglion located behind the eye and plays a role in controlling the muscles and blood vessels that are involved in eye movement and accommodation for near vision.
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