Bassett Collection of Stereoscopic Images of Human Anatomy
Dissection of left orbit from a lateral approach
Lateral rectus muscle; communication of lacrimal and zygomatic nerves
Image #55-4
KEYWORDS: Bones cartilage joints, Cheek, Connective tissue, Eye, Face, Muscles and tendons, Peripheral nervous system.
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Dissection of left orbit from a lateral approach
Lateral rectus muscle; communication of lacrimal and zygomatic nerves
The periorbita has been resected and the bony walls of the orbit cut away more than previously. A thin layer of fat separated the lateral rectus muscle from the periorbita. This fat has been removed from along with that surrounding other structures within the orbit. The fascia of the lateral rectus muscle is intact, but is extremely thin through most of its extent. Anteriorly the fascia thickens rapidly and has a broad attachment to the orbital tubercle of the zygomatic bone to form the lateral check ligament (6).
- Supraorbital nerve
- Superior lacrimal gland
- Anastomotic branch of lacrimal nerve with zygomatic nerve
- Periorbita (split into two layers to enclose lacrimal gland)
- Lateral palpebral raphe
- Lateral check ligament
- Tunica conjunctiva
- Fascia forming suspensory ligament for eye
- Inferior oblique muscle
- Dura mater of anterior cranial fossa
- Superior rectus muscle
- Lacrimal artery and nerve
- Middle meningeal artery (anterior branch)
- Superior ophthalmic vein (lacrimal veins visible as tributaries)
- Lateral rectus muscle
- Branch of oculomotor nerve (III) to inferior oblique muscle
- Inferior ophthalmic vein (situated in periorbita which bridges across inferior orbital fissure)
- Zygomatic nerve
- Infraorbital nerve
- Orbital muscle (of Müller)