This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
Trochlear nerve supplies 
Select and explain. 
A. Superior oblique, B. Inferior oblique, C. Lateral rectus, D. Inferior rectus
A: Superior oblique
Answer: A: Superior oblique 
Explanation: A. i.e. (Superior oblique) (115-BDC-3 4th)* Trochlear nerve - is very long and slender nerve supplies only the superior oblique muscle of the eye ball* Abducent - is a small motor nerve supplies the lateral rectus muscle**