Download 136 Visual Apparatus: Extra-ocular Muscles

Visual Apparatus: Extra-ocular Muscles
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Right orbit with eyeball and extra-ocular
muscles (from above). Levator palpebrae superioris
muscle has been severed.
Action of the extra-ocular muscles (anterior aspect).
A = Superior rectus muscle
B = Inferior oblique muscle
C = Medial rectus muscle
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D = Lateral rectus muscle
E = Inferior rectus muscle
F = Superior oblique muscle
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Left orbit with eyeball and extra-ocular muscles
(anterior aspect). Lids, conjunctiva, and lacrimal
apparatus have been removed.
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Right orbit with eyeball and extra-ocular
muscles (from above). The roof of the orbit has been
removed, the superior rectus muscle and the levator
palpebrae superioris muscle have been severed.
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Inferior oblique muscle
Trochlea
Tendon of superior oblique muscle
Superior oblique muscle and
ethmoid air cells
Medial rectus muscle
Inferior rectus muscle
Optic nerve (extracranial part)
Optic nerve (intracranial part)
Cornea
Superior rectus muscle
Lateral rectus muscle
Rohen et al.: Anatomy. ISBN: 978-3-7945-2982-7. © Schattauer GmbH
12 Levator palpebrae superioris
muscle
13 Common annular tendon
14 Internal carotid artery
15 Optic chiasma
16 Sclera
17 Nasal bone
18 Nasolacrimal duct
19 Zygomatic bone
20 Infra-orbital nerves
21 Maxilla
Visual Apparatus: Extra-ocular Muscles
Extra-ocular muscles and their nerves (lateral aspect of the left eye). Lateral rectus muscle divided and reflected.
Left orbit with extra-ocular muscles (anterior aspect).
Eyeball removed.
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Supra-orbital nerve
Cornea
Insertion of lateral rectus muscle
Eyeball (sclera)
Inferior oblique muscle
Inferior rectus muscle and
inferior branch of oculomotor nerve
Infra-orbital nerve
Superior rectus muscle and lacrimal nerve
Optic nerve (n. II)
Lateral rectus muscle
Ciliary ganglion and abducens nerve (n. VI)
Extra-ocular muscles (antero-lateral aspect).
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Oculomotor nerve (n. III)
Trochlear nerve (n. IV)
Ophthalmic nerve (n. V1) and maxillary nerve (n. V2)
Trochlea and tendon of superior oblique muscle
Superior oblique muscle
Medial rectus muscle
Levator palpebrae superioris muscle
Superior rectus muscle
Inferior rectus muscle
Greater alar cartilage
Supra-orbital nerve and levator palpebrae superioris muscle
Levator labii superioris muscle
Rohen et al.: Anatomy. ISBN: 978-3-7945-2982-7. © Schattauer GmbH
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