superior tarsal muscle
a well-defined layer of smooth muscle that extends from the aponeurosis of the musculus levator palpebrae superioris to the superior tarsus; it is innervated by sympathetic nerves and acts to hold the upper lid in an elevated position; its paralysis in Horner syndrome result in ptosis.
Synonym(s): musculus tarsalis superiorTA, Müller muscle3
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.