Q3. An inflammation of the ciliary body and iris may give rise to a so-called ciliary...

Q3. An inflammation of the ciliary body and iris may give rise to a so-called ciliary injection.
Describe the arteries that give rise to the ciliary injection.
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Q4. What is the innervation of the sphincter and dilator pupillae muscles?
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Q5. Corneal deturgescence is dependent upon:
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Expert Solution

Q3.The inflammation of the corneairis and the ciliary body causes the dilatation of the anterior ciliary vessels whichh causes the corneal injection.

anterior ciliary arteries

these are 7 small arteries that originate from the muscular arteries.
They supply the conjunctiva,sclera and also the recti musclses.
after originating they pass along with the tendons of the rectus muscles
They forms a circumcorneal subconjunctival vascular zone
Forms the greater arterial circle of iris -ciculus ateriosus major

Q4.

Both the sphicter and dilator papiilary muscles help in controlling the amount of light entering the eye.

The sphincter pupillae receives parasympathetic innervation from short ciliary nerves ( the postganglionic fibers of ciliary ganglion ) which are the branches of oculomotor nerve (CN III)
The dilator muscle is innervated by postganglionic sympathetic nerves arising from the superior cervical ganglion as the sympathetic root of ciliary ganglion.

Sydney Mullin answered 1 year ago

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