Response and Regulations Crossword

The master controlling and communicating system of the body.
Consists of the brain and spinal cord, occupy the dorsal body cavity.
Consists mainly of the nerves that extend from the brain to the spinal cord.
Consists of nerves that convey impulses to the CNS from sensory receptors located in various parts of the body.
Carries impulse from the CNS to effector organs, the muscles and glands.
Form the myelin sheaths around nerve fibers that are found in the PNS.
Neuron processes that convey incoming messages toward the cell body.
Generate nerve impulses and typically conduct them away from the cell body.
Small collections of cell bodies found in a few sites outside the CNS in the PNS.
Contains mostly unmyelinated fibers and cell bodies.
Consists of dense collections of myelinated fibers.
Several neurons. Most common structural type.
Neurons with two processes-an axon and a dendrite.
Have a single process emerging from the cell body
When a nerve impulse stimulates ion channels to open, positive ions flow into the cell and cause depolarization, which leads to muscle cell contraction.
The change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential has changed the membrane potential to a positive value.