Not to be confused with the Superior tarsal muscle or the circular fibres of the ciliary muscle, both of which are also known as Müller's muscle.
Orbitalis muscle
Details
Nerve
Sympathetic Nerves
Actions
protrusion of eyeball
Identifiers
Latin
musculus orbitalis
TA98
A15.2.07.009
TA2
6820
FMA
49034
Anatomical terms of muscle
[edit on Wikidata]
The orbitalis muscle is a vestigial or rudimentary nonstriated muscle (smooth muscle) that crosses from the infraorbital groove and sphenomaxillary fissure and is intimately united with the periosteum of the orbit. It was described by Heinrich Müller[1] and is often called Müller's muscle. It lies at the back of the orbit and spans the infraorbital fissure.[2] It is a thin layer of smooth muscle that bridges the inferior orbital fissure. It is supplied by sympathetic nerves, and its function is unknown.[3]
^Toerien MJ, Gous AE. The orbital muscle of Müller. S Afr Med J. 1978 Jan 28; 53(4):139-41. [1]
^Gray's Anatomy - 40th Ed/MINOR MUSCLES OF THE EYELIDS
^Snell-Clinical Anatomy by Regions - Snell - 8th Ed - 2008-Chapter 11 : The Head and Neck
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