Flashcards in CNS Part 2 Deck (119)
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1
Basic functional unit of CNS, how work is done.
Neuron
2
Language of neurons
Action potentials
3
Structural support or CNS
Neuroglia
4
What maintains and buffers ECF, regulates electrolytes, and is involved in signal transmission
Astrocytes
5
What produces myelin
Oligodendroglia
6
What in CNS is involved in Immunity and presents antigen to T cells
Microglia/ latent phagocytes
7
What lines ventricles and produces CSF
Ependymal cells
8
What produces myelin in PNS.
Schwann cells
9
1 Schwann cell per ___. 1 ___ can myelinate several axons in CNS
Axon. Oligodendrocyte
10
What is structural support in PNS
Satellite cells
11
Input directly goes to __ or to __
Dendrites or soma
12
Impulses only travel in one direction because of what
Refractory period
13
Excitatory comes on __, inhibitory mainly on ___. But there are exceptions
Dendrite, soma
14
Axon hillock is dense in __ __. Easier to reach thresholds here than __, which needs more __
Sodium channels, soma, inputs
15
Inter neurons have __ axons
Small
16
Unipolar neurons more common in what
Intervertebrates
17
Pseudo unipolar neurons found in __ __ __, __ neuron. Axon comes straight out and goes to __ __ directions
Dorsal root ganglion, sensory. Two different
18
__ neurons common in nose and eye, sensory organs
Bipolar
19
___ neurons are motor neurons
Multipolar
20
Major neuron types of cerebral cortex: __ cells and __ or __ cells
Pyramidal
Stellar or granule
21
Pyramidal cells are __% of cerebral cortex
__ amino acid: __ or __
75
Excitatory, glutamate, aspartate
22
Stellate or granule cells are __% __
___ amino acid: __ or __
Most are ___: ___
25, interneurons,
Excitatory, glutamate or aspartate
Inhibitory, GABA
23
Anesthetic agents work by enhancing what
GABA
24
GABA works by passing ___, brings __ inside of cell. ___ cell further
Chloride, negative, depolarizes
25
__ ___ get things from cell body to pre-synaptic terminal
Calcium microfilaments
26
__ and __ can move quickly because of microfilaments
Mitochondria and vesicles
27
__ move slowly
Proteins
28
2 major proteins: ___ from spinal cord to foot. __ moves proteins back up from axon terminus to cell body. Both are __ and use __
Kinesins
Dynein
ATP
Microtubules
29
Rely on __ to keep ions and neurotransmitters in balance. ___ critical for normal neuronal function
Neuroglia
Astrocytes
30
