For better understanding of the role of each part of the spinal cord, several experiments are performed on a frog. The
following table summarizes the experiments and the results.
Section of dorsal root
Section of vental root
Section of spinal nerve
Loss of sensation in the
corresponding repon
Results
Paralysis
corteponding region
Panalysis
1-Pose the problem studied.
2-Indicate the role of the dorsal root.
3-Show that the spinal nerve is a mixed nerve.
After several complete sections, there are degeneration in the
roots as shown in the figure below:
section
sections 2
sectious 3
4-Deduce the location of the cells bodies. .​