Assertion: uvea's muscle | /r/AtLocation | constant tug of war
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Source sentences:
text: Note that these two muscles are in a constant "tug of war" such that inhibition of sympathetic input (e.g. Horner's syndrome) will result in obvious constriction of the pupils (a condition known as "miosis") whereasinhibition of parasympathetic input (such as treatment with eye drops containing a parasympathetic antagonist like atropine) will result in dilation of the pupils (a.k.a.