Divisions and Neural Tissue A. Divisions Fig.
Neurons can be very long cells, but they are microscopic in size.
Nerves are collections of 1000's of individual neurons wrapped in connective tissue. Nerves can be seen with the naked eye. 2b -refers collectively to all the cells making up the nervous system. B. Spinal Nerves 1. Once a spinal nerve passes between 2 vertebrae, the sensory and motor neurons diverge into separate branches called a dorsal root and ventral root, respectively.