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  2. Orbital septum - Wikipedia

    en.wikipedia.org/wiki/Orbital_septum

    The orbital septum is an important structure that separates anterior and posterior extent of the orbit. Orbital septum acts as a physical barrier that prevents the infection of the anterior part of the eye spreading posteriorly. For example, preseptal cellulitis mainly infects the eyelids, anterior to the orbital septum. Meanwhile, orbital ...

  3. Tarsus (eyelids) - Wikipedia

    en.wikipedia.org/wiki/Tarsus_(eyelids)

    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).

  4. Orbit (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Orbit_(anatomy)

    The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone. [7] The roof (superior wall) is formed primarily by the orbital plate frontal bone, and also the lesser wing of sphenoid near the apex of the orbit. The orbital surface presents medially by trochlear fovea and laterally by ...

  5. Orbital part of frontal bone - Wikipedia

    en.wikipedia.org/wiki/Orbital_part_of_frontal_bone

    The inferior surface of each orbital plate is smooth and concave, and presents, laterally, under cover of the zygomatic process, a shallow depression, the lacrimal fossa, for the lacrimal gland; near the nasal part is a depression, the fovea trochlearis, or occasionally a small trochlear spine, for the attachment of the cartilaginous pulley of the obliquus oculi superior.

  6. Postorbital bar - Wikipedia

    en.wikipedia.org/wiki/Postorbital_bar

    Some species, such as tarsiers, have a postorbital septum. [3] This septum can be considered as joined processes with a small articulation between the frontal bone, the zygomatic bone and the alisphenoid bone and is therefore different from the postorbital bar, while it forms a composite structure together with the postorbital bar.

  7. Eyelid - Wikipedia

    en.wikipedia.org/wiki/Eyelid

    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.

  8. Postorbital bone - Wikipedia

    en.wikipedia.org/wiki/Postorbital_bone

    A skull diagram of Dromaeosaurus, a dromaeosaurid dinosaur. The postorbital is colored dark blue. The postorbital is one of the bones in vertebrate skulls which forms a portion of the dermal skull roof and, sometimes, a ring about the orbit. Generally, it is located behind the postfrontal and posteriorly to the orbital fenestra. In some ...

  9. Levator palpebrae superioris muscle - Wikipedia

    en.wikipedia.org/wiki/Levator_palpebrae_superior...

    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 ...