This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
The principle that is the spinal cord dorsal roost are sensory and the ventral roots are motor is known as 
Select and explain. 
A. Laplace's law, B. Bell-Magendie Law, C. Frank-Starling Law, D. Weber-Fechner Law
B: Bell-Magendie Law
Answer: B: Bell-Magendie Law 
Explanation: Ans. (b) Bell-Magendie Law(Ref: Ganong, 25th ed/p.229)Bell-Magendie law:#This law states that "Spinal dorsal roots contain sensory fibers and ventral roots contain motor fibers"