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30 Cards in this Set

  • Front
  • Back
2 nervous system cell types
neurons - neuroglia (glial cells)
neurons are ____, conduct ____ ____, and are ____
excitable - nerve impulses - amitotic
neuroglia (glial cells) are
supporting cells
neuroglia (glial cells) surround
neurons
neuroglia (glial cells) are non-____
conducting
how many types of neuroglia (glial cells)
6 - 2 in pns - 4 in cns
4 supporting cells of cns
astrocytes - oligodendrocytes - ependymal - microglia
astrocytes are located in
cns only
astrocytes anchor
neurons to capillaries
astrocytes pick up ____ ____ & ____
excess K+ & neurotransmitters
astrocytes recapture
released neurotransmitters
oligodendrocytes are located in
cns only
oligodendrocytes wrap ____ around thicker ____ ____ (axons) to insulate them
extensions - neuron fibers
oligodendrocytes form
myelin sheath
ependymal cells are located in
cns only
ependymal cells line the cavities of the ____ & ____ ____
brain + spinal cord
ependymal cells are ciliated or non-ciliated
ciliated
ependymal cells have ____ that circulate the ____ fluid (csf)
cilia - cerebrospinal
microglia are located in
cns only
microglia migrate toward
injured neurons
microglia are ____ cells
phagocytic
microglia devour ____ of debris from damaged ____
microorganisms - neurons
2 supporting cells of pns
schwann cells - satellite cells
schwann cells are located in
pns only
schwann cells wrap around (2)
axons of the neurons in the pns
schwann cells form
myelin sheath
schwann cells are needed for axon
regeneration
satellite cells are located in
pns only
satellite cells surround ____ ____ bodies within ____ for support
neuron cell - ganglia
satellite cells help control the
chemical environment