WebFeb 12, 2024 · Excycloduction (extorsion) is a torsional movement of the eye about the anteroposterior axis that displaces the superior pole of the eye laterally. Extorsion is the … WebThere are six extraocular muscles that control all of the movement of the eye. These muscles are the superior rectus, inferior rectus, lateral rectus, medial rectus, superior oblique, and inferior oblique. The muscles of the eye are designed to stabilize and move both eyes. Special nervous centers located throughout the brain and brainstem interact …
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WebVisuo-vestibular innervation, if unaffected by fixational innervation, would cause simultaneous elevation and extorsion of the left eye and depression and intorsion of the right eye. B, Compensatory fixational innervation to the elevators is necessary to maintain a steady vertical position of the right eye. WebTrochlear Nerve - Actions of The Superior Oblique Muscle... up (depression and elevation of the eyeball) and (2) rotation in the plane of the face (intorsion and extorsion of the eyeball) ... to rotate the top of the eyeball toward the nose (intorsion) ...When the eye is abducted (looking away from the nose), the force of intorsion increases, while the force of … in any all in mysql
Extorsion Definition & Meaning Merriam-Webster Medical
WebMar 20, 2024 · In fact, each of the six extraocular muscles exerts rotational forces in all three planes (elevation-depression, adduction-abduction, intorsion-extorsion) to varying degrees, depending on which way the eye is looking. The relative forces change every time the eyeball moves—every time the direction of gaze changes. WebDec 31, 2024 · The principal eye movements performed by the oblique muscles are slightly more complicated. In addition to moving up, down, left, and right, the eyes can also rotate when the head is tilted to either side. Rotation of the eye toward the nose/midline is called intorsion and rotation toward the ear is called extorsion. Webextorsion: [ eks-tor´shun ] tilting of the upper part of the vertical meridian of the eye away from the midline of the face. inbox php mailer