This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Main action of superior rectus 
Select and explain. 
A. Extorsion, B. Intorsion, C. Elevation, D. Depression
C: Elevation
Answer: C: Elevation 
Explanation: Actions of superior rectus Veical axis: elevation Main action horizontal axis: addicts Anterioposterior axis: rotates medially (intorsion) Ref: BDC volume 3:sixth edition pg 211