Nervous system and tissue

Sensory Input

information gathered by sensory receptors

Integration

processing and interpretation of sensory input

Motor output

effector organs (muscles and glands) produces a response (movement)

Neuroglia (glial cells)

small cells that support and maintain neurons

Neurons (nerve cells)

cells that transmit electrical glands

Neurons

extreme longevity, amitotic (loses their ability to divide), high metabolic rate (requires oxygen and glucose)

astrocytes (CNS neuroglia)

hold neurons in place, deliver essential nutrients, keeps the brains environment balanced, and cleans up chemical waste

microglial cells (CNS)

small cells that touch/monitor neurons from damaging

ependymal cells (CNS)

form a barrier between CSF and line central cavities of brain/spinal cord, helps circulate the CSF

Oligodendrocytes (CNS)

produces myelin sheaths

Satellite cells (PNS)

same function as astrocytes in cns (hold neurons together, deliver nutrients, etc)

Schwann cells (PNS)

forms myelin sheaths

Dendrites

receive the signal (sensory input)

Soma

cells body=integration

Axons

sends signals to rest of body to create a motor output