Nervous System Overview
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Last updated 2:37 AM on 1/13/23
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23 Terms
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Central Nervous System
in the brain and spinal cord
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Peripheral Nervous System
in parts of the nervous system besides the brain and spinal cord
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sensory
afferent
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motor
efferent
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The peripheral nervous system has how many systems?
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autonomic nervous system
to cardiac and smooth muscles and glands; involuntary
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somatic nervous system
to skeletal muscles; voluntary
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parasympathetic nervous system
routine involuntary functions; normal range
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sympathetic nervous system
high alert; fight or flight
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soma
\-interprets electrical changes given by dendrites
\-contains the nucleus
\-contains the nucleus
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dendrites
\-where neurons receive most information
\-has neurotransmitters (chemical receptors)
\-has neurotransmitters (chemical receptors)
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axon
\-a strong signal gets sent here and becomes an action potential
\-covered in myelin (insulatory material)
\-covered in myelin (insulatory material)
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Nodes of Ranvier
\-neuroscopic gaps within the axon
\-speeds up the action potentials
\-speeds up the action potentials
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axon terminals
\-neurotransmitters are released once the signal reaches here and then interacts with the receptors of another dendrite
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neuroglia
nerve glue
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astrocytes
support and anchor neurons to surrounding capillaries
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microglia
provides immune response to central nervous system
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ependymal cells
secrete and circulate cerbrospinal fluid (CSF)
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Oligodenrocytes
provide myelin insulation to neurons in the central nervous system (CNS)
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satellite cells
support and anchor neurons in the peripheral nervous system (PNS)
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schwann cells
provide myelin insulation to neurons in the peripheral nervous system (PNS)
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found in the CNS
astrocytes, microglia, ependymal, oligodenrocytes
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found in the PNS
satellite cells, schwann cells
Note 
Flashcards (31)