1.1 Extraocular Muscles The anatomy of the Extraocular Muscles EXTRINSIC MUSCLES OF RIGHT EYEBALL Medial Rectus Muscle medial inferior Lateral Rectus Muscle Superior Rectus Muscle Inferior Rectus muscle Superior oblique muscle inferior oblique Inferior Oblique Muscle superior rectu 复旦大学附属眼耳鼻喉科医院
1.1 Extraocular Muscles The anatomy of the Extraocular Muscles Medial Rectus Muscle Lateral Rectus Muscle Superior Rectus Muscle Inferior Rectus Muscle Superior oblique Muscle Inferior Oblique Muscle
1.2 Individual Muscle Function Muscle Primary action Secondary and Tertiary action Medial rectus Adduction None Lateral Rectus Abduction None Superior Rectus Elevation Adduction Intorsion Inferior rectus Depression Adduction Extortion Superior oblique Intorsion Depression, Abduction Inferior oblique Extorsion Elevation. abduction 复大学附属眼耳鼻喉科医院
1.2 Individual Muscle Function Muscle Primary action Secondary and Tertiary action Medial Rectus Adduction None Lateral Rectus Abduction None Superior Rectus Elevation Adduction,Intorsion Inferior Rectus Depression Adduction,Extortion Superior Oblique Intorsion Depression,Abduction Inferior Oblique Extorsion Elevation,Abduction
Primary Position of Gaze Person is looking straight ahead with the head and body erect 复大学附属眼耳鼻喉科医院
Primary Position of Gaze Person is looking straight ahead with the head and body erect
1.3 Synergistic &Antagonistic Muscles(Sherrington's Law) co Synergistic muscles: same field of action of the same eye Muscle Primary action Secondary action Superior Rectus Elevation Adduction Intorsion Inferior oblique Extorsion Elevation. Abduction Antagonistic muscles opposite field of action of the same eve Muscle Primary action Secondary action Medial rectus Adduction None Lateral rectus Abduction None 复大学附属眼耳鼻喉科医院
1.3 Synergistic &Antagonistic Muscles(Sherrington’s Law) Synergistic muscles： same field of action of the same eye Antagonistic muscles： opposite field of action of the same eye Muscle Primary action Secondary action Superior Rectus Elevation Adduction,Intorsion Inferior Oblique Extorsion Elevation,Abduction Muscle Primary action Secondary action Medial Rectus Adduction None Lateral Rectus Abduction None
1.3 Yoke Muscles(Hering's Law) 10 Yoke Muscles: The pair of agonist muscles with the same field action of both eyes rsr Right, Left LIO RLR LMR LMR RLR 网回问园 LIR RIR RSO LSO 复大学附属眼耳鼻喉科医院
1.3 Yoke Muscles(Hering’s Law) Yoke Muscles ：The pair of agonist muscles with the same field action of both eyes. RSR LIO LSR RIO LMR RLR LIR RSO RLR LMR RIR LSO Right Left