Bassett Collection of Stereoscopic Images of Human Anatomy

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Dissection of left orbit from an anterior approach

Insertion of levator palpebrae superioris muscle

Image #52-3

KEYWORDS: Eye, Face, Muscles and tendons, Vasculature.

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Dissection of left orbit from an anterior approach

Insertion of levator palpebrae superioris muscle

The orbicularis oculi muscle has been incised vertically and retracted to expose deeper structures in the upper eyelid. The insertion of the aponeurosis of the levator palpebrae superioris muscle into the deep surface of the orbicularis oculi muscle is visible at 16. Some of the fibers of this aponeurosis continue to insert into the skin of the eyelid. A thin layer of fascia covers the tarsal plate (18).

1 .	Ascending branches of infratrochlear nerve
2 .	Frontalis muscle
3 .	Descending branch of infratrochlear nerve
4 .	Procerus muscle
5 .	Angular artery and nasal branch of angular vein
6 .	Middle palpebral ligament
7 .	Junction of nasal bone with lateral nasal cartilage
8 .	Transverse part of nasalis muscle (left half reflected)
9 .	Nasal branch of angular artery
10 .	Angular head of levator labii superioris muscle
11 .	External nasal branch of anterior ethmoidal nerve
12 .	Corrugator supercilii muscle
13 .	Layer of fat between orbicularis oculi muscle and orbital septum (not yet exposed)
14 .	Superficial temporal artery
15 .	Orbital part orbicularis oculi muscle (retracted)
16 .	Aponeurosis levator palpebrae superioris muscle
17 .	Palpebral part of orbicularis oculi muscle (retracted)
18 .	Superior tarsus
19 .	Lacrimal nerve
20 .	Margin of skin supporting cilia
21 .	Palpebral part of orbicularis oculi muscle
22 .	Orbital part orbicularis oculi muscle
23 .	Zygomaticus muscle