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34 Cards in this Set

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Information processing center
Includes brain and spinal cord
Central Nervous system(CNS)
collects info from sensory receptors and brings it to the CNS
Affervent division of PNS
transmits motor commands to muscular glands
effervent division of PNS
Functional division
involuntary
activates smooth cardiac muscle
control centers within the CNS
Peripheral components-sympathetic and parasympathetic
autonomic nervous system
functional division of nervous system
activates skeletal muscle cells voluntarily or involuntarily
Somatic nervous system
info transfer and processing thru 5 cell structures
1 of 2 cell types
neuron
neuron structure
receptor
dendrite
neuron structure
contains nucleus and organelles of neuron
cell body
neuron structure
conducts nerve impulse
axon
neuron structure
axon branches-ends
Teleodendria
neuron structure
end of teleodendria, release neurotransmitters that affect other neurons, muxcles or glands
synaptic terminals
what is the order in which the info is processed thru the structures of the neuron?
1-dendrites
2-cell body
3-axon
4-teleodendria
5-synaptic terminal
cells that support functioning of CNS and PNS.
1 of 2 cell types
neuroglia or glial cells
cell of CNS
-phagotic cell that engulfs foreign substance(Bacteria)
microglia
cell of CNS
-epitheleal cells that form passageways for the flow of cerebral spinal fluid
ependymal
cell of CNS
-form the repairs and develop nerve tissue
astrocyte
cell of CNS
-wrap CNS axons with protein
oligodendrocytes
cell of PNS
-a clustered arrangement of neurons
ganglia
cell of PNS
-a clustered arrangement of neurons
ganglia
cell of PNS
-cells that enclose the neuron cell bodies in the ganglia
satellites
cell of PNS
-surround myelinated or unmyelinated neural axons to increase rate of nerve
impulse transmission
schwann
cellular region
-identified by presence of myelinated axons
white matter
cellular region
-identified by presence of unmyelinated axons,dendrites, and cell bodies
gray matter
properties of neurons
1-highly responsive to stimuli-
2-produces traveling electrical signals measured in microvolt action potentials
3-_________of neurotransmitters
1-excitability
2-conductivity
3-secretion
rate of conductivity depends on
1-presence of___________
2-diameter of___________
1-myelin sheaths
2-axon
class of neurons
in PNS send stimuli from receptor in senses to CNS
sensory(afferent)neuron
class of neuron
-in brain and spinal cord
-lie between sensory and motor pathways
-90% of total neurons
-process, store and retreive info
interneurons
class of neuron
sends response to effectors(muscle and gland cells)
motor(efferent)neuron
site of connection/communication between the terminal end of a neuron and another cell
-neuron but if muscle neuromuscular junction
synapse
physical gap or space of the synapse
synaptic cell
neuron that sends the impulse into the cleft
presynaptic neuron
1-terninal end of presynaptic neuron

2-organelles that store neurotransmitters in the presynaptic neuron
1-synaptic terminal
2-synaptic vessels
neuron with receptors that captures the signal from cleft and transmits it onward
postsynaptic neuron
-monitoring orientation and internal vs.external environment
-coordination and conrol of bodily activities
-memory,learning,intelligence
-programming of instinctual behaviors
Functions of the nervous system