The nervous system oversees our body's movement, which system is the nervous system regulating in this instance?

The somatic nervous system controls voluntary movements such as those in the skin, bones, joints, and skeletal muscles. Both of these systems within the PNS work together with the CNS to regulate bodily function and provide reactions to external stimuli.

not sure if this what   you'r looking for would be percent composition

layer 3 is younger than layer 6.