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Muscles of the orbit. Muscles of the orbit. extrinsic muscles of eyeball ( extra-ocular muscles ) involved in movements of the eyeball or raising upper eyelids. The extrinsic muscles include the levator palpebrae superioris, superior rectus, inferior rectus, medial rectus, lateral rectus,
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Muscles of the orbit • extrinsic muscles of eyeball (extra-ocular muscles) involved in movements of the eyeball or raising upper eyelids. The extrinsic muscles include • the levator palpebrae superioris, • superior rectus, inferior rectus, medial rectus, lateral rectus, • superior oblique, and inferior oblique
Layers of the eye ball: • 1- fibrous layer: cornea& sclera • 2- vascular layer: iris& ciliary body& choroid • 3- nervous layer: retina