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Cell Types In The Nervous System > Neurons > Flashcards

Neurons Flashcards

1
Q

What are the 3 types of neurons

A

Multipolar
Psudounipolar
Bipolar

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2
Q

Bipolar neuron

A

In retina and olfactory

Single dendrite info to cell body then to axon

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3
Q

Multipolar

A

Most abundant type in cns
Dendrites branch directly to cell body
Single axon from axon hillock

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4
Q

Pseudounipolar

A

Found mostly in spinal ganglia
Goes directly to axon

Relays sensory info from peripheral receptor to the cns

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5
Q

Types of neuronal synapses

A

Axodendritic
Axosomatic
Axoaxonal

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6
Q

Axosomatic

A

Axon contracts another neuron cell body directly

Less common

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7
Q

Axodendritic

A

Most common.

Can receive thousands

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8
Q

Axoaxonal

A

Axon contacts another axon

Occurs near axon hillock

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9
Q

Glial cells

A

Out numbered 10:1
Main function to support and protect neurons

Provide immune response to inflammation and injury

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10
Q

Types of glial cells

A 
Astrocytes
Oligodendrocytes
Schwann cells
Microglia
Polydemdrocytes
Ependymal cells
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11
Q

Astrocytes

A

Most common
Provides structure and support
End of feet form blood brain barrier.
Glucose and blood pass
Cleans out neurotransmitter from synaptic cleft
Maintains ionic homeostasis of interstitial fluid in cns

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12
Q

Oilodendrocytes

A

Myelinating cells in cns
Provides insulation and protective layer
1 can myelinate multiple axons

Nodes of ranvier: gaps on the myelin sheath

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13
Q

Schwann cells

A

Myelinating in pns
Only myelinate a single axon
Maintains homeostasis ion

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14
Q

Microglia

A

Immune cells in cns
Derived from monocytes and macrophanges
Activated through release inflammatory molecules
Cytokinesis

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15
Q

Polyodendrocytes

A

Stem cell to prison

Can generate glia cells and neurons

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16
Q

Ependymal cells

A

Line ventricles
Separate the cerebral fluid from nervous tissue
Some produce CDs via choroid plexus

17
Q

What’s the neuron structure

A 
Soma
Dendrites 
Axon 
Axon hillock
Axon terminals 
Schwann cells
Myelin sheath
Node of ranvier

Cell Types In The Nervous System (1 decks)

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