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Nervous System
movesci 110-Motor Control
16
Other
Undergraduate 1
02/05/2010

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Term
Muscular System
Definition
creates movement via contraction/relaxation of muscle fibers
Term
Nervous System
Definition
dictates muscle activity, nerves are controllers
Term
Central Nervous System
Definition
all neurons and gila contained entirely within the brain/spinal cord
Term
Peripheral Nervous System
Definition
all neurons and gila not contained entirely within the brain/spinal cord
Term
Cranial Nerves
Definition
supraspinal; 12 of tem (group of nerves)
Term
Spinal Nerves
Definition
mixed nerves; alpha motorneurons-causes muscles to contract
Term
Dendrites
Definition
information from other neurons
Term
SOMA
Definition
cell body, sums information from dendrites
Term
Axon
Definition
transmits information from cell body
Term
PS terminal
Definition
attaches to other neurons to relay information
Term
Sensory Neurons
Definition
deliver information to the CNS, give us information about the body relative to the environment, afferent
Term
Motor Neurons
Definition
connect to muscle cells which cause movement, necessary for any voluntary movement, efferent
Term
Interneurons
Definition
processing functions, connect neurons to each other, majority of neurons
Term
Gilal Cells
Definition
insulate, support, and nourish neighboring neurons, more plentiful than neurons
Term
astrocytes
Definition
most abundent glial cells-form blood-brain barrier
Term
myelin
Definition
cover axon of many neurons and speeds up transmission of impulses; found in oligodendrocytes (CNS) and schwann cells (PNS)
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