Describe the planes of muscles, Biology

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Describe the Planes of Muscles

The planes of superior and inferior recti in primary position form an angle of about 230 with the Y-axis. Therefore, the axis of rotation of these muscles does not coincide with the X-axis. In primary position of the eye, the superior rectus not only elevates and adducts the globe but also rotates it around the antero-posterior Y-axis, which then causes in torsion.

 


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