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Cards In This Set
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Explain the origin of the term extrensic eye muscles? Why is it entitled such?
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They are termed extrensic because they originate within the orbit and insert onto the white outer surface of the eye (the sclera)
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What is the relation between the muscle name and its location?
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Their name derives from the location of their insertion on the anterior part of the sclera.
ie; medial, lateral, inferior, superior
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What is the function of the medial rectus? Where is it located?
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The medial rectus attaches to the anterolateral surfaceof the eye and pulls it medially (ADDUCTION)
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When your right eye looks to the right, which extrinsic eye muscle is contracted?
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The lateral recuts, attached to the anterolateral surface of the eye is contracted and pulls eye laterally. It is used to make your right eye look to the right (ABDUCTION)
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Name the location and function of the inferior rectus
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The inferior rectus attaches to the anteroinferior part of the sclera and pulls the eye inferiorly and medially. i.e when you look down i.e when you look at your nose
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This muscle is pulls your eye superiorly and slightly medially
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The superior rectus (just as the inferior rectus) does not pull directly parallel to the long axis resulting in its slight medial pull
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Label this diagram
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 1. |
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This muscle elevates the posterior part of the eye and turns the eye laterally
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The superior oblique depresses the eye and turns it laterally. It passess through a pulley-like loop called the trochlea
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Name the location and function of the inferior oblique
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The inferior oblique elevates eye. Located at inferior posterior part of eye. Contracting the muscle pulls the posterior part inferior
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