The superior tarsal muscle is a smooth muscle adjoining the levator palpebrae superioris muscle muscle that helps to raise the upper eyelid. The superior tarsal muscle originates on the underside of levator palpebrae superioris muscle and inserts on the superior tarsal plate of the eyelid.

Nov 3, 2023 · Superior tarsal is a smooth muscle of the upper eyelid. It originates from the deep surface of levator palpebrae superioris and inserts inferiorly, to the superior tarsal plate of the upper eyelid. The superior tarsal muscle receives its …

Oct 5, 2024 · The superior tarsal muscle, also known as the Müller muscle, is an accessory smooth muscle that allows for the retraction and elevation of the upper eyelid. This muscle receives sympathetic innervation from fibers originating from the sympathetic cervical ganglion, and vascular supply from the superior branches of the ophthalmic artery.

Jul 11, 2019 · Frontalis muscle contracture can open the eyelids an additional 2 mm. The eyelid margin. This diagram demonstrates the conceptual split between the anterior lamella (skin and orbicularis, right side) and posterior lamella (tarsus and conjunctiva, left side) of the eyelid.

Dec 22, 2022 · The levator palpebrae superioris (LPS) is the only muscle involved in raising the superior eyelid. A small portion of this muscle contains a collection of smooth muscle fibres – known as the superior tarsal muscle. In contrast to the LPS, the superior tarsal muscle is innervated by the sympathetic nervous system.

The tarsi (sg.: tarsus) or tarsal plates are two comparatively thick, elongated plates of dense connective tissue, about 10 mm (0.39 in) in length for the upper eyelid and 5 mm for the lower eyelid; one is found in each eyelid, and contributes to its form and support. They are located directly above the lid margins. [1] .

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.

Jan 16, 2023 · What is the superior tarsal muscle? The superior tarsal muscle, called Muller’s muscle, is a structural muscle that acts to maintain the elevation of the upper eyelid. It collects innervation from the sympathetic nervous system & is unique in that it …

The superior tarsal muscle is a thin layer of smooth muscle associated with the superior tarsal plate. It arises from the inferior surface of the tendon of levator palpebrae superioris muscle and extends to the superior margin of the superior tarsus.

Müller's superior tarsal muscle has been extensively studied by anatomists and physiologists but has been largely ignored by surgeons. This muscle is considered from the standpoint of both gross and finer anatomy.