nervous system Flashcards

1
Q

what is Perikaryon

A
  • neuron cytoplasm
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2
Q

function of the Neurofilaments/Neurotubules:

A

make up the neuron cytoskeleton

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3
Q

Neurofibrils

A
  • bundles of neurofilaments​
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4
Q

Nissl bodies

A
  • clusters of free ribosomes​
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5
Q

axoplasm

A
  • cytoplasm of the axon​
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6
Q

Axon hillock

A
  • area where the initial segment connects to the cell body​
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7
Q

Collaterals

A
  • branches off the axon
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8
Q

axon terminals

A
  • ends of axon telodendrias
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9
Q

telodendria

A

ends of the axon and collaterals

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10
Q

axoplasmic transport

A

the movement of material between the cell body and the axons​

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11
Q

what 2 subdivisions does the does the PNS split into?

A
  1. afferent = bring sensory info to CNS
  2. efferent = bring motor commands out
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12
Q

what are the two man branches of the nervous system?

A
  1. CNS (brain and spinal cord)
  2. PNS (everything else)
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13
Q

what does the afferent split into?

A
  1. somatic
  2. visceral
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14
Q

what two subdivisions does the efferent division split into?

A
  1. somatic nervous system (SNS)
  2. automatic nervous system (ANS)
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15
Q

what 2 subdivisions does the ANS split into?

A
  1. sympathetic nervous system
  2. parasympathetic nervous system
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16
Q
A
17
Q
A
18
Q
A