hellew. Two of my lecture pages are contradicting eachother. I shall type the exact words it says.
on one lecture page it says:-
"dilator pupillae - smooth muscle arranged radially- stimulation of sympathetic fibres---> contraction of radial muscle---->dilation of pupil = mydriasis.
but on another lecture page it says:-
atropine (tropicamide) - passive mydriasis (loss of mitotic drive to constrictor pupillae)
is mydriasis the dilation of pupil or the constriction on pupil?
Parasympathetic innervation constricts pupil (occulomotor nerve)...
Blockade of parasympathetic innervation (by atropine) dilates pupil...
This is passive dilation (passive mydriasis)...
Thanks for posting! You just need to create an account in order to submit the post
Already a member?
Oops, something wasn't right
please check the following:
Not got an account?
Sign up now
© Copyright The Student Room 2016 all rights reserved
The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.
Register Number: 04666380 (England and Wales), VAT No. 806 8067 22
Registered Office: International House, Queens Road, Brighton, BN1 3XE