Which option correctly describes the nature of nerve signals? a. nerve signals are electrical. they move along the nerve cells from the point of contact tot he spinal cord and then to the brain
b. nerve signals are mechanical. they move along nerve cells from the point of contact to the spinal cord and then to the heat.
c. nerve signals are mechanical. they move along nerve cells from the point of contact to the spinal cord and then to the brain.
d. nerve signals are electrical. they move along nerve cells from the point of contact to the spinal cord then to the heart.