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Neuro > Cells and tissues of the nervous system > Flashcards

Cells and tissues of the nervous system Flashcards

1
Q

What are the glial cells of the PNS?

A

Satellite

Schwann

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2
Q

What are the glial cells of the CNS?

A

Astrocytes
Oligodendrocytes
Microglia
Ependymal

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3
Q

What is present on imaging MS?

A

MRI shows white plaques of demyelination

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4
Q

What is MS?

A

Patchy loss of myelin sheath

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5
Q

What is the function of the blood-brain barrier?

A

Prevents harmful amino acids and ions in the blood from entering the brain

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6
Q

Where is the blood-brain barrier absent?

A

Some circumventricular parts of the brain like the hypothalamus and posterior pituitary

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7
Q

Drugs which are aimed to operate in the brain must have what properties?

A

Must be lipid soluble or have a suitable vector

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8
Q

Do neurons have a high or low metabolic rate?

A

High

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9
Q

Are neurons long or short living?

A

Long

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10
Q

What are some properties of glial cells?

A

Smaller than neurons
Supporting cells
Non-excitable

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11
Q

What are some properties of neurons?

A

Structural
Functional
Excitable
Impulses carried as action potentials

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12
Q

What are the ventricles of the brain?

A

The ventricles of the brain are a communicating network of cavities filled with cerebrospinal fluid (CSF) and located within the brain parenchyma

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13
Q

Where do the lateral ventricles lie?

A

In the cerebral hemishpheres

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14
Q

Where does the 3rd ventricle lie?

A

In the diencephalon

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15
Q

What connects the lateral ventricles to the 3rd ventricle?

A

Interventricular foramen

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16
Q

Where does the cerebral aqueduct lie?

A

In the midbrain

17
Q

Where does the 4th ventricle lie?

A

In the hindbrain, with the pons and medulla to the front and the cerebellum at the back

18
Q

What is CSF somewhat responsible for?

A

Maintaining ICP

19
Q

Where is CSF formed?

A

Choroid plexus of each ventricle

20
Q

Where does CSF lie?

A

Between Arachnoid and Pia mater

21
Q

How is CSF absorbed?

A

By arachnoid villi into the sagittal sinus, a venous channel in the brain

Neuro (29 decks)

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