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: Physiology
The principle that in the spinal cord the dorsal roots are sensory and ventral roots are motor is known as: 
Select and explain. 
A. Weber fechner law, B. Bell Magendie Law, C. Sensation law, D. Law of projection
B: Bell Magendie Law
Answer: B: Bell Magendie Law 
Explanation: The principle that in the spinal cord the dorsal roots are sensory and ventral roots are motor is known as Bell Magendie law. Ref: Ganong's, Review of medical physiology, 21st Edition, Page 129.