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Histology > Nervous Tissue > Flashcards

Nervous Tissue Flashcards

(70 cards)

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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
Interconnect neurons and creates circuits
Interneurons
26
Most important and numerous
Interneuron
27
Interneurons and motor neuron are what structure classification
Multipolar
28
Rare in adult except for special senses
Bipolar
29
Ends in CNS and creates dorsal root
Central process
30
In dorsal and ventral ramus and connected to peripheral receptors
Peripheral process
31
Makes dorsal root ganglion | Predominately sensory
Pseudounipolar
32
Neuron to muscle neurotransmitter
Acetylcholine
33
Receptor drives
Function
34
2 types of neuroglia in PNS
Schwann cells | Satellite cells
35
Nerve glue
Neuroglia
36
Myelinate axons in PNS
Schwann cells
37
Allows for faster conduction of action potentials
Node of Ranvier
38
Overlapping inner layers of neurolemmocyte plasma membrane
Myelin sheath
39
Disease because of unmyelinated axons
Multiple sclerosis
40
Axon + neurolemma + myelin =
Nerve fiber
41
Schwann cells sit on axon during
Development
42
Outer layer of myelin where cytoplasm and nucleus are
Neurolemma
43
Cluster of neuron cell bodies outside CNS
Ganglion - sensory or autonomic
44
Surround each ganglion cell body
Satellite cells
45
Predominantly pseudounipolar neurons No synapses Action potential to CNS
Sensory
46
Satellite cell functions
Nourish Insulate Regulate
47
Ganglion for smooth, cardiac muscles and glands
Autonomic
48
Multipolar neurons with synapse
Autonomic
49
Neuroglia of CNS that Myelinate more than one axon
Ogliodendrocytes
50
Neuroglia in CNS that contact with capillaries, control ionic environment, forms scar tissue, contributes to blood brain barrier
Astrocytes
51
Neuroglia in CNS engulfing of micro organisms or other cells and foreign bodies by phagocytosis
Microglia
52
Neuroglia in CNS that lines CNS cavities
Ependymal cells
53
Nervous tissue has a lot or little extracellular fluid
Little because of lots of processes and neuroglia
54
Central nervous system includes
Brain and spinal cord
55
How many layers of cerebellum cortex
3
56
How many layers in cerebral cortex
6
57
Layers of cerebellar cortex
Molecular Purkinje Granular
58
Gray matter includes
Neuron cell bodies
59
White matter includes
Myelinated axons
60
Spinal cord Gray where White where
Gray inside | White outside
61
Dorsal horn of gray matter
Sensory
62
Ventral horn of gray matter
Motor
63
Peripheral nerve surrounded by
Epineurium
64
Fascicle surrounded by
Perineurium
65
Nerve fiber surrounded by
Endoneurium
66
Disintegration of Nissl bodies of neuron or damage to peripheral process
Chromatolysis
67
Blood vessels travel in | And branches penetrate into
Epineurium | Perineurium
68
Anastomosis of branches into perineurium that forms unbroken intraneural net called
Vasa nervosum
69
Vasa nervosum function
Allows for diffusion of nutrients and wastes
70
Toward reference point
Afferent

Histology (8 decks)

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