Involuntary = cardiac and smooth muscle; glands

• Autonomic
• Central Nervous System
• Peripheral Nervous System 
• Somatic

Nerves outside the brain and spinal cord

• Autonomic
• Central Nervous System
• Peripheral Nervous System
• Somatic

Integrating command center = the brain and spinal cord

• Autonomic
• Central Nervous System
• Peripheral Nervous System
• Somatic

cells that are specialized to transmit messages

• Autonomic
• Neuroglia
• Neurons
• Somatic

Cells that support, insulate, and protect neurons

• Autonomic
• Neuroglia
• Neurons
• Somatic

Make the insulating myelin sheaths that cover the nerve fibers

• Astrocyte
• Ependymal Cell
• Microglial Cell
• Oligodendricyte

Spider-like phagocyte that gets rid of debris

• Astrocyte
• Ependymal Cell
• Microglial Cell
• Oligodendricyte

Cell that lines brain cavity and circulates spinal fluid

• Astrocyte
• Ependymal Cell
• Microglial Cell
• Oligodendricyte

In a neuron, this conducts messages away from the cell body

• Axon
• Cell Body
• Dendrites
• Mitochondria

In a neuron, this conducts messages towards the cell body

• Axon
• Cell Body
• Dendrite
• Mitochondria