Question

In: Anatomy and Physiology

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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Solutions

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 10 months ago
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