Term
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Definition
"nerve glue"
supporting cells in the central nervous system |
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Term
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Definition
type of neuroglia
abundant star shaped cells
cling to neurons (brace, anchor, supply with nutrients)
protect neurons from harmful substances |
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Term
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Definition
spiderlike phagocytes
dispose of debris like dead brain cells or bacteria |
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Term
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Definition
line cavity of brain and spinal cord
beating of cilia circulates spinal fluid
forms protective cushion |
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Term
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Definition
wrap flat extensions around nerve fibers forming myelin sheaths (CNS)
cannot transmit nerve pulses |
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Term
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Definition
| form myelin sheaths in PNS |
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Term
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Definition
| protective, cushioning cells in PNS |
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Term
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Definition
contains usual organelles
nissl substance and neurofibrils abundant |
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Term
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Definition
| filaments importabt in maintaining cell shape |
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Term
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Definition
| carry impulses toward cell body |
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Term
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Definition
carry impulses away from cell body
each nerve only has one |
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Term
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Definition
branching at the end of the axon
contain vesicles with neurotransmitters |
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Term
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Definition
| small space separating axon terminal from one neuron and dendrites of another |
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Term
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Definition
| joint between two neurons |
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Term
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Definition
| part of Schwann cell external to myelin sheath |
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Term
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Definition
| gaps between myelinated sections |
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Term
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Definition
| clusters in CNS where cell bodies are found |
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Term
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Definition
| small collections of cell bodies outside of CNS |
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Term
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Definition
| bundles of nerve fibers running through CNS |
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Term
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Definition
| bundles of nerve fibers running through PNS |
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Term
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Definition
| dense collections of myelinated fibers |
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Term
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Definition
| unmyelinated fibers and cell bodies |
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Term
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Definition
| neurons that carry impulses from sensory receptors to CNS |
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Term
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Definition
| sensory neurons in tendons and muscles |
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Term
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Definition
| neurons that carry impulses from CNS to viscera, muscles and glands |
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Term
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Definition
| connect motor and sensory pathways |
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Term
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Definition
| rapid, predictable, and involuntary responses |
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Term
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Definition
| neural pathways where reflexes occur |
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Term
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Definition
| all reflexes in skeletal muscles |
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