Page 1 of 2: anat+opthal

shraddha · Credits: 19590 My Scrapbook

Directing the gaze downward when the eye is abducted requires the
A. lateral rectus muscle
B. inferior rectus muscle
C. superior oblique muscle
D. inferior oblique muscle
E. medial rectus muscle

please give the funda

shaina · Credits: 15163 My Scrapbook

i think the ans is superior oblique
inoreder to move downward from abducted position the movt required by eyeball is downward and intortion. which r the functions of sup obl.
on seeing the ques confusion arises b/w inf rectus and sup obl bcos these are the 2 muscles causing downward movt but we can rule out inf rectus as it causes extortion
if this ques were to move from adducted position to downward pos the ans becomes inferior rectus.
as from adducted to downward we require downward and extortion
hope its clear

draditithegreat · Credits: 1248000 My Scrapbook

me too for sup oblique...

shaina · Credits: 15163 My Scrapbook

whats the ans given shradha

shraddha · Credits: 19590 My Scrapbook

ans given is B. inferior rectus muscle

and the answer is not wrong.

but I could not get the funda.
can somebody explain this?

BRAVO · Credits: 46015 My Scrapbook

it shud be internal rectus only..

with superior oblique we see down towards the nose when the eye is adducted....

draditithegreat · Credits: 1248000 My Scrapbook

bravo u wrote when eye is adducted and question say when eye is abducted.....

bhavu · Credits: 9481 My Scrapbook

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just move the mose at arrow and you will know the answers

bhavu · Credits: 9481 My Scrapbook

just directly clic the site ib blue and then open the images of extraoccular muscles action

bhavu · Credits: 9481 My Scrapbook

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