Neural Tissue
Terms
undefined, object
copy deck
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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
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Functional division
involuntary
activates smooth cardiac muscle
control centers within the CNS
Peripheral components-sympathetic and parasympathetic - autonomic nervous system
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functional division of nervous system
activates skeletal muscle cells voluntarily or involuntarily - Somatic nervous system
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info transfer and processing thru 5 cell structures
1 of 2 cell types - neuron
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neuron structure
receptor - dendrite
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neuron structure
contains nucleus and organelles of neuron - cell body
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neuron structure
conducts nerve impulse - axon
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neuron structure
axon branches-ends - Teleodendria
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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?
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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
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cell of CNS
-phagotic cell that engulfs foreign substance(Bacteria) - microglia
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cell of CNS
-epitheleal cells that form passageways for the flow of cerebral spinal fluid - ependymal
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cell of CNS
-form the repairs and develop nerve tissue - astrocyte
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cell of CNS
-wrap CNS axons with protein - oligodendrocytes
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cell of PNS
-a clustered arrangement of neurons - ganglia
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cell of PNS
-cells that enclose the neuron cell bodies in the ganglia - satellites
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cell of PNS
-surround myelinated or unmyelinated neural axons to increase rate of nerve
impulse transmission - schwann
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cellular region
-identified by presence of myelinated axons - white matter
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cellular region
-identified by presence of unmyelinated axons,dendrites, and cell bodies - gray matter
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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
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class of neuron
-in brain and spinal cord
-lie between sensory and motor pathways
-90% of total neurons
-process, store and retreive info - interneurons
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class of neuron
sends response to effectors(muscle and gland cells) - motor(efferent)neuron
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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
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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
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-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