Physiology The principle that is the spinal cord dorsal roots are sensory and the ventral roots are motor is known as A Laplace's law B Bell-Magendie's law C Frank Starling's law D Weber-Fechner's law 💡 Explanation The principle that is the spinal cord dorsal roots are sensory and the ventral roots are motor is known as ✓ Correct Answer: B. Bell-Magendie's law