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Foundation concepts > Neurons > Flashcards

Neurons Flashcards

1
Q

What is the function of nervous tissue?

A

React to stimulus and respond to intracellular and extracellular change.

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2
Q

What is the life time of nerve cells?

A

forever

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3
Q

Do nerve cells divide?

A

no

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4
Q

True or false- new nerve cells can be made in a life time.

A

True- via stem cell

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5
Q

What is structural classification of nervous tissue?

A

CNS (spine + brain) and PNS (all but spine + brain)

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6
Q

What is functional classification of nervous tissue?

A

ANS (viscera) and SNS (sensory)

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7
Q

What are the nerve cells involved in nervous tissue?

A

Neuron and neuroglia

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8
Q

True or false- motor has pseudounipolar and bipolar

A

False- sensory

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9
Q

True or false- Sensory has multipolar

A

True

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10
Q

True or false- anaxonic has no axon

A

True

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11
Q

True or false- all neurons have only 1 axon

A

true- some are divided

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12
Q

What are the 4 structural classification neurons?

A
  • pseudounipolar
  • bipolar
  • multipolar
  • anaxonic
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13
Q

What are the 4 functional classification of neurons?

A
  1. Sensory
  2. Motor
  3. Interneuron
  4. Integrative
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14
Q

True or false- sensory and motor function at both somatic and viscera

A

True

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15
Q

True or false- Interneuron is between sensory and motor

A

true

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16
Q

What neuroglia cells do CNS have?

A
  • astrocyte
  • Microglia
  • oligodendrocyte
  • Ependymal cell
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17
Q

What neuroglia is largest in CNS?

A

Astrocyte

18
Q

Whats point of astrocyte?

A

Mechanical and physical support

19
Q

Whats point of microglia?

A

Phagocytic

20
Q

Whats neuroglia is smallest in CNS?

A

oligodendrocyte

21
Q

Whats the point of oligodendrocyte?

A

Myelin production

22
Q

Whats the point of Ependymal cell?

A

make cerebrospinal fluid

23
Q

What neuroglia cells do PNS have?

A

schwann and satellite

24
Q

Whats the point of satellite cell?

A

support and insulate

25
Q

Whats the point of schwann cell?

A

nerve support for myelin and nonmyelin and clean PNS debris

26
Q

Which part is dorsal part of spinal?

A

Sensory

27
Q

Which part is ventral part of spinal?

A

Motor

28
Q

What are neurons made of?

A
  1. dendrites
  2. cell body
  3. axon
  4. myelin sheath
29
Q

True or false- cell body has golgi apparatus

A

true

30
Q

What makes proteins in cell body?

A

nissil bodies

31
Q

Where are nissil bodies found?

A

only cell body and no where else.

32
Q

What do axon contain of?

A

Has microtubules, neurofilament vesicle and mitochondria

33
Q

How does PNS myelinated differ to nonmyelinated?

A 
Myelinated= sucessive layer while non doenst 
Myelinated= outer layer cytoplasm + nucleus
34
Q

How does CNS myelinated differ to nonmyelinated?

A 
myelinated= oligodendocyte- parallel 
nonmyelinated= bare
35
Q

Whats the connective tissue for PNS?

A

Epinerium (dense irregular): peripheral of nerve- fill space- blood travel through it
Perinerium (loose/ arleor): nerve fibre + blood vessel
Endornerium (delicate reticular): no vascular

36
Q

What is the grey areas function in spine and brain?

A

nonmyelinated

37
Q

Where is grey area of brain located?

A

out

38
Q

Where is grey area of spine located?

A

in

39
Q

What are the three synapses?

A

axodendritic, axosomatic and axoaxonic

40
Q

What are chemical synapes?

A

neurotransmitter

41
Q

What are example of electric synapses?

A

gap junction

Foundation concepts (9 decks)

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