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
Tapetum is a pa of? 
Select and explain. 
A. Putamen, B. Corpus callosum, C. Internal capsule, D. Trigeminal quadrigemini
B: Corpus callosum
Answer: B: Corpus callosum 
Explanation: The tapetum is formed by those fibres of the trunk and splenium of Corpus callosum which are not intersected by the fibres of Corona Radiata.It is a thin lamina of white fibres which forms the roof and lateral wall of the posterior horn and lateral wall of inferior horn of the lateral ventricle.(Reference: Vishram Singh textbook of neuroanatomy Second Edition page 164)