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1 ACCESSORY ORGANS OF EYE. Organa oculi ac-cessoria.

2 Muscles of eye. Musculi bulbi. Extrinsic ocular muscles.

3 Orbital muscle. M. orbitalis. Thin layer of smooth muscle which bridges the inferior orbital fissure. C

4 Superior rectus. M. rectus superior. o: Common tendinous ring. i: Along an oblique line in front of the equator, 7-8 mm posterior to the corneal margin. A: Elevation and medial rotation of superior pole of eyeball. I: Oculomotor nerve. B C D

5 Inferior rectus. M. rectus inferior. o: Common tendinous ring. i: Along an oblique line about 6 mm behind the corneal margin. A: Depression and lateral rotation of superior pole of eyeball. I: Oculomotor nerve. B C D

6 Medial rectus. M. rectus medialis. o: Common tendinous ring. i: About 5.5 mm from the corneal margin. A: Adduction of corneal pole. I: Oculomotor nerve. B C

7 Lateral rectus. M. rectus lateralis. o: Common tendinous ring and lesser wing. i: 5.5 mm behind corneal margin. A: Abduction of corneal pole. I: Abducent nerve. B C D

8 Tendon of lateral rectus at greater wing.

Lacertus musculi recti lateralis. C

9 Common tendinous ring (common annular tendon). Anulus tendineus communis. Tendinous ring for attachment of the recti ocular muscles. It surrounds the optic canal and medial part of the superior orbital fissure. C

10 Superior oblique. M. obliquus superior. o: Body of sphenoid medial to common tendinous ring. i: Posterolateral aspect of sclera behind the equator after its tendon passes through the trochlea and approaches sclera obliquely from the medial margin of orbit. A: Abduction, medial rotation and depression. I: Trochlear nerve. B

11 Trochlea. Cartilaginous sling attached to the medial wall of the orbit [[trochlear spine]] and serving as a pulley for the tendon of the superior oblique muscle. B

12 Tendon sheath of superior oblique muscle (synovial bursa of trochlea). Vagina tendinis m. obliqui superioris [[bursa synovialis trochlearis]]. Synovial sheath (bursa) for the tendon of the superior oblique muscle separating the tendon from the trochlea. B

13 Inferior oblique. M. obliquus inferior. o: Lateral to the nasolacrimal canal. i: Posterior to equator. A: Elevation, abduction and lateral rotation. I: Oculomotor nerve. D

14 M. levator palpebrae superioris. o: Bone above optic canal and dura of optic nerve. Its tendon broadens anteriorly and splits to form an upper and lower layer. I: Oculomotor nerve. A C D

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Essentials of Human Physiology

Essentials of Human Physiology

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