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Ch. 11
Functional Organization of Nervous tissue
21
Anatomy
Undergraduate 2
03/13/2013

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Cards

Term
Central Nervous System
Definition
CNS

Brain and spinal cord
Term
Peripheral Nervous system
Definition
PHS

Sensory receptors and nerves
Term
Ganglion
Definition
Collection of nerve cell bodies outside of CNS
Term
nerve
Definition
collection of nerve cell bodies inside of CNS
Term
Afferent
Definition
Sensory signals

periphery to CNS
Term
Efferent
Definition
Motor signals

CNS to periphery
Term
Somatic Nervous System
Definition
Division of PNS

CNS to Skeletal muscle

Voluntary
Term
Autonomic Nervous System
Definition
Division of PNS

CNS to smooth muscle and certain glands

Involuntary(subconscious)
Term
Sympathetic
Definition
Division of Autonomic NS
Term
Parasympathetic
Definition
Division of Autonomic NS
Term
Neurons
Definition
Receive stimuli and transmit action potentials
Term
Neurolglia
Definition
Support and protect neurons
Term
Neuron cell body (Soma)
Definition
Nuceus, Nissl Substance
Term
Dendrites
Definition
Carry info towards the cell body
Term
Axons
Definition
Carry info away from cell body
Term
Astrocytes
Definition
Term
Ependymal cells
Definition
Term
Oligodendrocytes
Definition
Form myelin sheath surrounding multiple axons

If axon is injured; no regrowth
Term
Schwann Cells
Definition
wrap around only one axon mutliple times

If axon is injured; forms a tunnel to guide regrowth
Term
Synapse
Definition
Junction btw cells where action potentials in one cell cause action potentials in another cell.
Term
Synaptic Cleft
Definition
Space btw cells of a synapse
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