Superior tarsal muscle
|Superior tarsal muscle|
|The tarsi and their ligaments. Right eye; front view. (Muscle not labeled but region is visible.)|
|Sagittal section of right orbital cavity. (Muscle not labeled but region is visible.)|
|Latin||musculus tarsalis superior|
|Origin||underside of levator palpebrae superioris|
|Insertion||superior tarsal plate of the eyelid|
|Nerve:||sympathetic nervous system|
|Action:||raise the upper eyelid|
The superior tarsal muscle (Müller's Muscle) is a smooth muscle adjoining the levator palpebrae superioris muscle that helps to raise the upper eyelid.
The superior tarsal muscle receives its innervation from the sympathetic nervous system on fibers carried along with the ophthalmic artery through the cavernous sinus. These postganglionic sympathetic fibers originate in the superior cervical ganglion.
The superior tarsal muscle works with the levator palpebrae superioris to raise the upper eyelid.