| A | B |
|---|
| brain and spinal cord | make up the central nervous system |
| cranial nerves and spinal nerves (voluntary) | make up the peripheral nervous system |
| nerve | is a group or bundle of fibers located outside the central nervous system that connect the brain and spinal cord with various parts of the body |
| afferent neurons | carry impulses to the brain and spinal cord from the skin and sense organs. |
| dendrites | portions of a neuron that receives impulses and carries them to the cell body |
| efferent neurons | carry impulses away from the brain and spinal cord to the muscles and glands |
| impulse | wave of sudden excitement |
| stimulus | something that activates or excites the nerve and results in an impulse |
| neuron | basic, individual, microscopic nerve cell |
| effector | a muscle or a gland |
| receptor | neuron portion OR special cells which detect a stimulus |
| interneuron/association neuron | neurons which function inside the CNS |
| Schwann cell | a nervous system cell which makes myelin |
| myelin | material found surrounding some neuron axons |
