Answer:
the brain stem
Explanation:
the structures of our brain stem, in conjunction with our spinal cord (not a part of our brain) is responsible for involuntary action. Not sure if it generate signals, but hey it's better than no answer.
All except number 2. Hope this helps!
I think it is the Epidermis
The cell wall should be the outer layer of the cell. Where the flagellum connect to.