Question 2 How many extrinsic eye muscles are attached to the exterior surface of each eyeball. 03 04 05 06
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The innervation of the eye muscles can be remembered by using the "chemical formula" below. According to this, all the extrinsic eye muscles except the superior oblique and lateral rectus are innervated by cranial nerve [(SO4)(LR6)]3.
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Procedure 4 Testing the Extrinsic Eye Muscles In this procedure, you will determine which extrinsic eye muscles are responsible for moving the eyeballs in each direction. Which extrinsic eye muscle is responsible for moving the right eye? Which extrinsic eye muscle is responsible for moving the left eye? Now trace a diagonal line, starting from the upper right corner and follow your finger to the lower left corner. Which extrinsic eye muscles produce these movements for each eye? Again, have your partner follow your finger horizontally from left to right. Which extrinsic eye muscles do you see for each eye? Finally, trace another diagonal, this time from your partner's lower left to the upper right, and have your partner trace out an hourglass shape overall. Which extrinsic eye muscles produce the movements you see for each eye?
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