Yoke muscle for right superior rectus is: (A) Left superior oblique, (B) Left inferior oblique, (C) Left inferior rectus, (D) Left superior rectus
Answer is B. Yoke muscles Yoke muscles (contralateral synergists) are a pair of muscles (one from each eye) which contract simultaneously during version movements. Different pairs of yoke muscles are as follows: 1) Right medial rectus and left lateral rectus 2)Right lateral rectus and left medial rectus 3)Right superior rectus and left inferior oblique 4)Right inferior rectus and left superior oblique 5)Right superior oblique and left inferior rectus 6)Right inferior oblique and left superior rectus. Reference :- A K KHURANA; pg num:- 537