Nervous Tissue Flashcards

1
Q

Away from reference point

A

Efferent

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2
Q

How many pairs of spinal nerves

A

31

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3
Q

How many pairs of cranial nerves

A

12

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4
Q

4 Effector tissues

A

Glands
Smooth
Skeletal
Cardiac

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5
Q

Components of neuron

A
Cell body (perikaryon)
Processes
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6
Q

What organelle modifies, transports and stores proteins

A

Rough endoplasmic reticulum

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7
Q

Fibrous intercellular network surrounding cells of CNS

A

Neutrophil

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8
Q

Peripheral nervous system is

A

Wiring and nerves transmits electrical currents

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9
Q

Sends info to and from CNS

A

Peripheral nervous system

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10
Q

Neuron responds to

A

Stimulus

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11
Q

Nissl bodies =

A

Rough endoplasmic reticulum

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12
Q

Signal to cell body

A

Dendrites

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13
Q

Neuroplasticity

A

Dendrites can change shape

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14
Q

What conducts action potential

A

Axon

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15
Q

Plasma membrane

A

Axolemma

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16
Q

Contents of axon

A

Axoplasma

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17
Q

Where axon originates

A

Axon hillock

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18
Q

Just past hillock where excitatory and inhibitory stimuli are added up

A

Initial segment

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19
Q

Where two axons come together

A

Synapses

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20
Q

2 directions of atonal transport

A

Retrograde and anterograde

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21
Q

Transport action potentials and molecules

A

Axonal transport

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22
Q

Afferent in PNS

A

Sensory

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23
Q

Efferent in PNS

A

Motor

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24
Q

From CNS out to 4 effector tissues

A

Motor

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25
Q

Interconnect neurons and creates circuits

A

Interneurons

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26
Q

Most important and numerous

A

Interneuron

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27
Q

Interneurons and motor neuron are what structure classification

A

Multipolar

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28
Q

Rare in adult except for special senses

A

Bipolar

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29
Q

Ends in CNS and creates dorsal root

A

Central process

30
Q

In dorsal and ventral ramus and connected to peripheral receptors

A

Peripheral process

31
Q

Makes dorsal root ganglion

Predominately sensory

A

Pseudounipolar

32
Q

Neuron to muscle neurotransmitter

A

Acetylcholine

33
Q

Receptor drives

A

Function

34
Q

2 types of neuroglia in PNS

A

Schwann cells

Satellite cells

35
Q

Nerve glue

A

Neuroglia

36
Q

Myelinate axons in PNS

A

Schwann cells

37
Q

Allows for faster conduction of action potentials

A

Node of Ranvier

38
Q

Overlapping inner layers of neurolemmocyte plasma membrane

A

Myelin sheath

39
Q

Disease because of unmyelinated axons

A

Multiple sclerosis

40
Q

Axon + neurolemma + myelin =

A

Nerve fiber

41
Q

Schwann cells sit on axon during

A

Development

42
Q

Outer layer of myelin where cytoplasm and nucleus are

A

Neurolemma

43
Q

Cluster of neuron cell bodies outside CNS

A

Ganglion - sensory or autonomic

44
Q

Surround each ganglion cell body

A

Satellite cells

45
Q

Predominantly pseudounipolar neurons
No synapses
Action potential to CNS

A

Sensory

46
Q

Satellite cell functions

A

Nourish
Insulate
Regulate

47
Q

Ganglion for smooth, cardiac muscles and glands

A

Autonomic

48
Q

Multipolar neurons with synapse

A

Autonomic

49
Q

Neuroglia of CNS that Myelinate more than one axon

A

Ogliodendrocytes

50
Q

Neuroglia in CNS that contact with capillaries, control ionic environment, forms scar tissue, contributes to blood brain barrier

A

Astrocytes

51
Q

Neuroglia in CNS engulfing of micro organisms or other cells and foreign bodies by phagocytosis

A

Microglia

52
Q

Neuroglia in CNS that lines CNS cavities

A

Ependymal cells

53
Q

Nervous tissue has a lot or little extracellular fluid

A

Little because of lots of processes and neuroglia

54
Q

Central nervous system includes

A

Brain and spinal cord

55
Q

How many layers of cerebellum cortex

A

3

56
Q

How many layers in cerebral cortex

A

6

57
Q

Layers of cerebellar cortex

A

Molecular
Purkinje
Granular

58
Q

Gray matter includes

A

Neuron cell bodies

59
Q

White matter includes

A

Myelinated axons

60
Q

Spinal cord
Gray where
White where

A

Gray inside

White outside

61
Q

Dorsal horn of gray matter

A

Sensory

62
Q

Ventral horn of gray matter

A

Motor

63
Q

Peripheral nerve surrounded by

A

Epineurium

64
Q

Fascicle surrounded by

A

Perineurium

65
Q

Nerve fiber surrounded by

A

Endoneurium

66
Q

Disintegration of Nissl bodies of neuron or damage to peripheral process

A

Chromatolysis

67
Q

Blood vessels travel in

And branches penetrate into

A

Epineurium

Perineurium

68
Q

Anastomosis of branches into perineurium that forms unbroken intraneural net called

A

Vasa nervosum

69
Q

Vasa nervosum function

A

Allows for diffusion of nutrients and wastes

70
Q

Toward reference point

A

Afferent