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ORBIT-EXTRAOCCULAR MUSCLES (RECTI)

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ORBIT-EXTRAOCCULAR MUSCLES (RECTI)

1. SUPERIOR RECTUS - arises from the superior part of the tendinous ring. It passes beneath the LEVATOR PALPEBRAE SUPERIORIS and inserts into the anterior surface of the sclera above the coronal equator of the eye.

2. MEDIAL RECTUS - arises from the medial part of the tendinous ring. It passes along the medial orbital wall and inserts into the medial surface of the sclera above the coronal equator of the eye.

3. INFERIOR RECTUS - arises from the inferior part of the tendinous ring. It inserts into the inferior surface of the sclera below the coronal equator of the eye.

4. LATERAL RECTUS - arises from the lateral convexity of the tendinous ring. Its C-shaped origin is longer than any other recti. It inserts into the lateral surface of the sclera above the coronal equator of the eye.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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