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Atlas - Orbit and contents

Facies orbitalis ossis frontalis
Facies orbitalis ossis frontalis
Facies orbitalis ossis zygomatici
Facies orbitalis ossis zygomatici
Facies orbitalis maxillae
Facies orbitalis maxillae
Maxilla
Maxilla
Os lacrimale
Os lacrimale
Os ethmoidale
Os ethmoidale
Os sphenoidale
Os sphenoidale
Incisura supraorbitalis
Incisura supraorbitalis
Foramen infraorbitale
Foramen infraorbitale
Ala major ossis sphenoidalis
Ala major ossis sphenoidalis
Ala minor ossis sphenoidalis
Ala minor ossis sphenoidalis
Canalis opticus
Canalis opticus
Nervus oculomotorius
Nervus oculomotorius
Nervus trochlearis
Nervus trochlearis
Nervus abducens
Nervus abducens
Vena ophthalmica superior
Vena ophthalmica superior
Vena ophthalmica inferior
Vena ophthalmica inferior
Arteria ophthalmica
Arteria ophthalmica
Nervus supraorbitalis
Nervus supraorbitalis
Fissura orbitalis inferior
Fissura orbitalis inferior
Nervus maxillaris
Nervus maxillaris
Nervus zygomaticus
Nervus zygomaticus
Arteria infraorbitalis
Arteria infraorbitalis
Nervus infraorbitalis
Nervus infraorbitalis
Os frontale
Os frontale
Arteria ethmoidalis posterior
Arteria ethmoidalis posterior
Arteria ethmoidalis anterior
Arteria ethmoidalis anterior
Nervus ethmoidalis anterior
Nervus ethmoidalis anterior
Nervus ethmoidalis posterior
Nervus ethmoidalis posterior
Arteria centralis retinae
Arteria centralis retinae
Arteria lacrimalis
Arteria lacrimalis
Arteriae ciliares posteriores breves
Arteriae ciliares posteriores breves
Arteriae ciliares posteriores longae
Arteriae ciliares posteriores longae
Rami musculares arteriae ophthalmicae
Rami musculares arteriae ophthalmicae
Arteria supraorbitalis
Arteria supraorbitalis
Arteria supratrochlearis
Arteria supratrochlearis
Arteria dorsalis nasi
Arteria dorsalis nasi
Arteria maxillaris
Arteria maxillaris
Vena ophthalmica superior
Vena ophthalmica superior
Sinus cavernosus
Sinus cavernosus
Venae vorticosae
Venae vorticosae
Nervus opticus
Nervus opticus
Ramus superior nervi oculomotorii
Ramus superior nervi oculomotorii
Ramus inferior nervi oculomotorii
Ramus inferior nervi oculomotorii
Nervus ophthalmicus
Nervus ophthalmicus
Nervus lacrimalis
Nervus lacrimalis
Nervus nasociliaris
Nervus nasociliaris
Musculus rectus superior
Musculus rectus superior
Musculus rectus inferior
Musculus rectus inferior
Musculus rectus lateralis
Musculus rectus lateralis
Musculus rectus medialis
Musculus rectus medialis
Musculus obliquus superior
Musculus obliquus superior
Musculus obliquus inferior
Musculus obliquus inferior
Musculus levator palpebrae superioris
Musculus levator palpebrae superioris
Anulus tendineus communis
Anulus tendineus communis
Arteria carotis interna
Arteria carotis interna
Sinus intercavernosus posterior
Sinus intercavernosus posterior
Sinus petrosus inferior
Sinus petrosus inferior
Sinus petrosus superior
Sinus petrosus superior
Sinus sigmoideus
Sinus sigmoideus
Dura mater
Dura mater
Sclera
Sclera
Tunica conjunctiva bulbi
Tunica conjunctiva bulbi
Cornea
Cornea
Pars optica retinae
Pars optica retinae
Choroidea
Choroidea
Lens crystallina
Lens crystallina
Iris
Iris
Camera posterior
Camera posterior
Camera anterior
Camera anterior
Corpus vitreum
Corpus vitreum
Sinus venosus sclerae
Sinus venosus sclerae
Capsula lentis
Capsula lentis
Circulus arteriosus major iridis
Circulus arteriosus major iridis
Circulus arteriosus minor iridis
Circulus arteriosus minor iridis
Corpus ciliare
Corpus ciliare

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The skeletal cavity that surrounds the soft tissues that make up the eye is known as the bony orbit. Bones that contribute to the formation of the bony orbit include orbital part of the frontal bone, the frontal process of the maxilla, the facial portion of the zygomatic bone, the lacrimal bone, the vertical plate of the ethmoid bone, the sphenoid bone and the orbital process of the palatine bone.

The bony orbit protects a large part of the eye as well as provides a stable and enclosed environment for the eyeball and its related structures.

The extraocular muscles that are responsible for eye movement are also protected by the bony orbit. These muscles are the superior rectus, inferior rectus, lateral rectus, medial rectus, superior oblique and inferior oblique muscles. They are innervated by the occulomotor nerve (CN III), the trochlear nerve (CN IV) and the abducens nerve (CN VI). The rectus muscles of the eye and the superior oblique muscle have their origin from a common tendinous ring known as the Annulus of Zinn, where are the inferior rectus muscle has its origin on the maxillary bone. However, all the extraocular muscles insert on the eyeball.
Other nerves that supply the soft tissue of the eye are the optic nerve (CN II) and the ophthalmic nerve (CN V1).

The ophthalmic artery, which is the first branch that arises from the internal carotid artery, supplies the eyeball and muscles of the eyeball via its numerous branches.

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