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In the upper eyelid, the orbital septum blends with the tendon of the levator palpebrae superioris, and in the lower eyelid with the tarsal plate. [2]When the eyes are closed, the whole orbital opening is covered by the septum and tarsi.
The attached or orbital margins are connected to the circumference of the orbit by the orbital septum. The lateral angles are attached to the zygomatic bone by the lateral palpebral raphe. The medial angles of the two plates end at the lacrimal lake, and are attached to the frontal process of the maxilla by the medial palpebral ligament).
The eyelid is made up of several layers; from superficial to deep, these are: skin, subcutaneous tissue, orbicularis oculi, orbital septum and tarsal plates, and palpebral conjunctiva. The meibomian glands lie within the eyelid and secrete the lipid part of the tear film.
Superior tarsal plate and skin of upper eyelid: Artery: Muscular branches of ophthalmic artery and supraorbital artery: Nerve: Superior division of oculomotor nerve: Actions: Elevation of upper eyelid: Antagonist: Palpebral part of orbicularis oculi muscle: Identifiers; Latin: musculus levator palpebrae superioris: TA98: A15.2.07.020: TA2: 2052 ...
The floor is separated from the lateral wall by inferior orbital fissure, which connects the orbit to pterygopalatine and infratemporal fossa. The medial wall is formed primarily by the orbital plate of ethmoid, as well as contributions from the frontal process of maxilla, the lacrimal bone, and a small part of the body of the sphenoid. It is ...
Glands of Krause are located in the stroma of the conjunctival fornix, and the glands of Wolfring are located along the orbital border of the tarsal plate. [2] These glands are oval and display numerous acini. The acini are surrounded, sometimes incompletely, by a row of myoepithelial cells.
The last muscle is the inferior oblique, which originates at the lower front of the nasal orbital wall, passes inferiorly over the inferior rectus muscle on its path laterally and posteriorly, and inserts under the lateral rectus muscle on the lateral, posterior part of the globe. Thus, the inferior oblique pulls the eye upward and laterally.
superior tarsal: head, extraocular (left/right) underside of levator palpebrae superioris: superior tarsal plate of eyelid: ophthalmic artery: sympathetic nervous system: raises upper eyelid? 2 1 rectus, superior: head, eye, orbit (left/right) annulus of Zinn at orbital apex 7.5 mm superior to corneal limbus: ophthalmic artery