Ruchiciliary075222445667899995433rghkiuff.pptx

Study

1. NAME: SAVAJIYANI RUCHI CHIRAGBHAI ROLL NO.:90 GUIDED BY: DR. UMESH MODASIYA SIR Ciliary ganglion

2. INTRODUCTION LOCATION ROOTS BRANCHES CLINICAL ASPECTS SUMMARY OUTLINE

3. INTRODUCTION What is parasympathetic ganglion? Definition : After leaving the brain, the parasympathetic fibres from each nuclei synapse in the peripheral ganglion. { Ganglion :Collection of neuron cell bodies outside CNS} These ganglia are located near the target viscera. All the ganglion contain 2 types of nerve connected to it. Topographic nerve Functional nerve Ciliary ganglion is a peripheral parasympathetic ganglion.

4. There are mainly 4 parasympathetic ganglion. Ciliary ganglia Otic ganglia Submandibular ganglia Pterygopalatine/sphenopalatine ganglia

5. It is a small , flat, reddish-grey swelling ,1-2mm in diameter. It is located near the apex of orbit in the fat between optic nerve and lateral rectus muscle. Topographically it is connected to nasociliary nerve and functionally connected to occulomotor nerve. LOCATION

6. Ciliary ganglion is made up of 3 types of roots. These three roots enter its posterior end. These are as follows: Parasympathetic (Motor) root Sympathetic root Sensory root Types of root

7. Parasympathetic root is derived from nerve to inferior oblique. It consist of Preganglionic parasympathetic fibres from Edinger-Westphal nucleus. These fibres RELAY in the ganglion. Postganglionic parasympathetic fibres arise from cell of ganglion and pass through SHORT CILIARY NERVES to supply “ CILIARY MUSCLE & SPHINCTER PUPILLAE.” 1. PARASYMPATHETIC(MOTOR) ROOT

8. Sympathetic root is derived from internal carotid plexus . It contains post ganglionic fibres arising from superior cervical ganglion. It pass along internal carotid, ophthalmic & long ciliary arteries. It pass out of ciliary ganglion without relay in the short ciliary nerves. They supply BLOOD VESSELS OF EYEBALL & DILATOR PUPILLAE . 2. SYMPATHETIC ROOT

9. It is derived from nasociliary nerve . It consist sensory fibres[for pain ,touch , temperature ] from eyeball. It also carries sensation from cornea , ciliary body and iris. It further pass through ciliary ganglion without relay. 3. SENSORY ROOT

10. ROOTS AND DISTRIBUTION OF CILIARY GANGLION

11. Branches of ciliary ganglion are short ciliary nerves. They are 8 to 10 in number and divides into 15 to 20 branches . Then these branches pierce the sclera around entrance of the optic nerve. They contain fibres from all the three roots. BRANCHES

12. Nerves from ciliary ganglion innervates the muscle that constrict the pupil a hole in the the iris that lets light enter the eye. It provide parasympathetic innervation to the iris , ciliary muscle , extraocular muscles and eyelids. Ciliary innervation regulates amount of light entering in the eye by controlling pupil dilator and constrictor. Clinical aspects

13. Mainly 4 types of ganglia. Ciliary ganglia- ganglia for the eye. Made up of three types of fibres. Parasympathetic fibres – supply sphincter pupillae and ciliary muscle. It relay in ciliary ganglion. Sympathetic fibres – derived from internal carotid plexus and supply blood vessels of eyeball and dilator pupillae . pass without relay. Sensory fibres – carry sensation from eyeball to cornea , ciliary body and iris. Pass through ganglion without relay. . SUMMARY

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