NSE 22A/B Lecture Notes - Lecture 6: Palpebral Fissure, Lateral Rectus Muscle, Medial Rectus Muscle
Document Summary
Physical examination and health assessment. (2 canadian ed. ) (canadian editors: browne, a. , macdonald- Identify the location of the following landmarks of the eye: upper eyelid, lower eyelid, palpebral fissure, pupil, iris, sclera, medial canthus, lateral canthus, and caruncle. Identify and describe the role/ function of the six extraocular muscles that are attached to the eyeball. Serve to direct the eye to points of the person"s interest: enable both straight and rotary movements, the four straight (or rectus) muscles, superior. Inferior: lateral, medial, two slanting (or oblique, superior. Identify and describe the cranial nerves that are involved in extraocular movements and visual acuity: movement is stimulated by 3 cranial nerves, vi (abducens) Innervates (carries the nerve impulse that moves a muscle) the lateral rectus muscle (abducts the eye, moving laterally toward the temple) Innervates superior oblique muscle (downward and upward toward the nose) Superior, inferior, and medial rectus, and inferior oblique muscle.
