Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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 - cerebral-spinal
|
|
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
|
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 ____ environment
|
chemical
|