Yoke muscle pair
Correct Answer: Rt LR + Lt MR
Description: Yoke muscles are the primary muscles in each eye that accomplish a given version (eg, for right gaze, the right lateral rectus and left medial rectus muscles). Each extraocular muscle has a yoke muscle in the opposite eye to accomplish versions into each gaze position. By the Herring law, yoke muscles receive equal and simultaneous innervation. The magnitude of innervation is determined by the fixating eye, which means that the angle of detion between eyes (strabismus) may vary depending on which eye is fixating. The primary detion is misalignment, with the normal eye fixating. If the paretic eye fixates, the ensuing secondary detion is typically larger than the primary detion. Ref - medscape.com
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now