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Neurons > Glial Cell > Flashcards

Glial Cell Flashcards

1
Q

What is Glial cells ?

A
  • Glial cells are non-neuronal cells in the nervous system that support and protect neurons.
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2
Q

What is non-neuronal cells ?

A

These are the cells in the nervous system that are not neurons but play crucial roles in supporting and maintaining the functions of neurons.

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3
Q

What are the different types of glial cells and their function ?

A

Astrocytes
Oligodendrocytes
Schwann cells
Microglia
Ependymal cells

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4
Q

Functions of Astrocytes

A
  • Maintain the blood-brain barrier
  • Provide nutrients to neurons
  • Regulate the extracellular environment
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5
Q

Functions of Oligodendrocytes

A
  • Produce myelin in the CNS
  • Insulate axons for faster signal transmission
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6
Q

Functions of Schwann Cells

A
  • Produce myelin in the PNS
  • help in nerve regeneration
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7
Q

Functions of Microglia

A
  • Act as immune defense in the CNS
  • Remove debris and damaged neurons
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8
Q

Functions of Ependymal Cells

A
  • Line brain ventricles and spinal cord
  • Produce and circulate cerebrospinal fluid
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9
Q

What is the function of glial cells ?

A

Support
Myelination
Defense
Regulation
Repair

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10
Q

What is the function of glial cells ?
Support

A
  • Provide metabolic and physical support to neurons
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11
Q

What is the function of glial cells ?
Myelination

A
  • Insulate axons to facilitate rapid signal transmission
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12
Q

What is the function of glial cells ?
Defense

A

Protect against pathogens and clear debris

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13
Q

What is the function of glial cells ?
Regulation

A

Maintain the extracellular environment and ensure efficient synaptic transmission

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14
Q

What is the function of glial cells ?
Repair

A

Aid in the repair and regeneration of nervous tissue

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15
Q

Who discovered glial cells in which year ?

A
  • Glial cells were discovered by the German pathologist Rudolf Virchow in 1856.
  • He introduced the term “neuroglia” to describe these cells, which he found interspersed among neurons in the brain.
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16
Q

How many glial cells present in brain ?

A
  • The human brain contains approximately 85 billion glial cells.
17
Q

By which tissue glial cells derived ?

A
  • Glial cells are derived from neural tissue during development.

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