This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Fibres passing through crus-cerebri are - 
Select and explain. 
A. Corticonuclear and cortricospinal fibres, B. Medial lemniscus, C. Spinothalamic, D. All
A: Corticonuclear and cortricospinal fibres
Answer: A: Corticonuclear and cortricospinal fibres 
Explanation: Crus cerebri contains : 

Middle two-third is occupied by corticospinal and corticobulbar (corticonuclear) fibers. 
Medial one-sixth is traversed by fronto-pontine fibers; and 
lateral one sixth contains temporopontine, parietopontine and occipitopontine fibers.