In case of Ptosis which cranial nerve will be completely paralyzed
Correct Answer: 3rd CN palsy
Description: Ans. (a) 3rd CN palsyRef: A.K. Khurana 6th ed. /379* Ptosis is drooping of eyelid.* Eyelid is comprised of 4 muscles:Muscles, their innervation and functionMuscleCN innervationFunctionLPSIIIOpens the eyelidMuller's muscleIIIOpens eyelid when LPS tiredFrontalisVIICloses the eyelidOrbicularis oculiVIICloses the eyelid* CN III palsy leads to drooping of eyelid (Ptosis).* CN VII palsy may also cause ptosis.Also Know* All the extraocular muscles are supplied by CN III except lateral rectus and superior oblique.* Lateral rectus supplied by- CN VI* Superior oblique supplied by- CN IVRemember- LR6, S04; all other by CN III
Category:
Ophthalmology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now