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Orbit and contents - want to learn more about it?

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Atlas - Orbit and contents

Orbital surface of frontal bone
Orbital surface of zygomatic bone
Orbital surface of maxilla
Lacrimal bone
Ethmoid bone
Temporal bone
Sphenoid bone
Supraorbital notch
Infraorbital foramen
Greater wing of sphenoid bone
Lesser wing of sphenoid bone
Optic canal
Oculomotor nerve
Trochlear nerve
Abducens nerve
Superior ophthalmic vein
Inferior ophthalmic vein
Ophthalmic artery
Optic nerve
Inferior orbital fissure
Maxillary nerve
Zygomatic nerve
Infraorbital artery
Infraorbital nerve
Frontal bone
Posterior ethmoidal artery
Anterior ethmoidal artery
Anterior ethmoidal nerve
Posterior ethmoidal nerve
Central retinal artery
Lacrimal artery
Short posterior ciliary arteries
Long posterior ciliary arteries
Muscular branches of ophthalmic artery
Supraorbital artery
Supratrochlear artery
Dorsal nasal artery
Maxillary artery
Superior ophthalmic vein
Cavernous sinus
Vorticose veins
Superior branch of oculomotor nerve
Inferior branch of oculomotor nerve
Ophthalmic nerve
Lacrimal nerve
Nasociliary nerve
Superior rectus muscle
Inferior rectus muscle
Lateral rectus muscle
Medial rectus muscle
Superior oblique muscle
Inferior oblique muscle
Levator palpebrae superioris muscle
Common tendinous ring
Internal carotid artery
Posterior intercavernous sinus
Inferior petrosal sinus
Superior petrosal sinus
Sigmoid sinus
Dura mater
Bulbar conjunctiva
Optic part of retina
Posterior chamber
Anterior chamber
Vitreous body
Venous sinus of sclera
Capsule of lens
Major arterial circle of iris
Minor arterial circle of iris
Ciliary body

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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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