WebThe extraocular muscles are well developed in the dog and, in addition to the four rectus and two oblique extraocular muscles, include the retractor oculi muscle that inserts … WebAs just described, the oculomotor nerve innervates four extraocular muscles: medial rectus, superior rectus, inferior rectus, and inferior oblique. Therefore, when the oculomotor nerve is involved by a lesion, medial rotation and upward rotation of the eyeball are paralyzed, but its lateral rotation is preserved.

Extraocular / eyeball muscle movements - YouTube

WebThe extraocular muscles are innervated by lower motorneurons that form three cranial nerves: the abducens, the trochlear, and the oculomotor … WebExtraocular muscles. Six muscles outside the eye govern its movements. These muscles are the four rectus muscles —the inferior, medial, lateral, and superior recti—and the superior and inferior oblique muscles. The … greater learning trust

Eye Anatomy Blood supply - Orbit - Extraocular muscles

WebThe actions of the extraocular muscles should not be memorised, but should be worked out. This video describes the anatomical movements and the basis of clinical testing of … WebSecondary action, extortion Superior Oblique- primary action, intorsion. Secondary action, depression Inferior Oblique- primary action, extortion. Secondary action, elevation. Describe how an accommodation response is produced in the eye. (10) For each of the extraocular muscles of the eye, state which cranial nerve innervates that muscle. (3) Since only a small part of the eye called the fovea provides sharp vision, the eye must move to follow a target. Eye movements must be precise and fast. This is seen in scenarios like reading, where the reader must shift gaze constantly. Although under voluntary control, most eye movement is accomplished without conscious effort. Precisely how the integration between voluntary and involunt… greater leavenworth museum