Motor- ability to activate the body's effectors to produce a response. Sensory and Motor neurons distributed throughout the body in connective tissue wrappings called nerves . Nerves are collections of 1000's of individual neurons wrapped in connective tissue. Using a tree analogy, the brain and spinal cord can be thought of as the central trunk, and the peripheral nerves as the branches which distribute all throughout the body. As the peripheral nerves extend away from the spinal cord, they progressively branch as individual neurons leave the parent branch to contact specific targets along the way.
Most peripheral nerves are mixed nerves, meaning they contain both sensory and motor neurons.
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. The Spinal Cord 1. The dorsal side of the spinal cord receives information from sensory neurons. The Cranial Nerves 1.