This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
Coicospinal fibers pass through which pa of internal capsule? 
Select and explain. 
A. Posterior one - third of anterior limb, B. Anterior two - third of posterior limb, C. Posterior two - third of anterior limb, D. Anterior two - third of anterior limb
B: Anterior two - third of posterior limb
Answer: B: Anterior two - third of posterior limb 
Explanation: Coicospinal fibers pass through the anterior two - third of the posterior limb of internal capsule. Posterior 1/3rd of posterior limb carries sensory fibers (including audio - visual pathways). Ref: Gray's39e/p-518