neurons and neuroglia Flashcards

1
Q

neuron classification based on number, length and mode of branching of neurites

A

unipolar, bipolar, multipolar

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2
Q

pyramidal cells have what type of neuron and location

A

golgi type1 neuron

cerebral cortex

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3
Q

structure in nerve cell body that synthesis proteins

A

nissl substance

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4
Q

related to the formation of dopamine( cytoplasmic organelle)

A

melanin

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5
Q

The phenomenon that gives impression that nissl substance has disappeared

A

chromatolysis

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6
Q

replacement gliosis

A

protoplasmic astrocytes proliferate and fill up space previously occupied by dead neurons due to disease

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7
Q

astrocyte types and locations

A

fibrous-white matter

protoplasmic- gray matter

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8
Q

astrocytes in PNS corresponds to

A

satellite cells

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9
Q

glial cells responsible for myelin production

A

CNS- Oligodendrocytes

PNS- Schwann cells

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10
Q

supports to forms the Blood-Brain Barrier

A

endothelial cells and Astrocytes

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11
Q

cell body in cns and pns

A

cns- nuclei

pns- ganglia

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12
Q

produces csf

A

choroidal epithelial cells- ependymal

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13
Q

transports substances from CSF to hypophyseal-portal system

A

Tanycytes (ependyma)

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14
Q

cell scavengers

metabolic by-product -the structure has granules

A

lysosomes

lipofuscin

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15
Q

the volume of cytoplasm within the nerve cell body always far exceeds that found in the neurites. true or false.

A

FALSE. the volume of cytoplasm within the nerve cell body is often far less than the total volume of cytoplasm in the neurites.

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16
Q

ependymal cells that circulate and absorb CSF

A

ependymocytes

17
Q

role in cell transport in nerves

A

microfilaments, microtubules, and neurofibrils.

18
Q

nerve fiber type which has the slowest conduction velocity and is sensitive to anesthesia.

19
Q

neurotransmitter with ionic mechanism as IPSP

20
Q

neurons which have an elongated cell body and have two neurites extending from each end.

21
Q

the major role of centrioles in mature neuron

A

maintenance of microtubules

22
Q

in females, one of the two X chromosomes is compact and sits in the inner surface of the nuclear envelope

23
Q

location of unipolar cells

A

posterior root ganglion

24
Q

forms the upper motor neuron in the cerebral cortex

A

pyramidal cells

25
Q

a discrete group of nerve cell bodies in the CNS

26
Q

neuromodulators that are located in a system that controls homeostasis

A

ACh ( muscarinic), serotonin, histamine, adenosine

27
Q

sharp localized pain, temperature, touch is a function of which fibers

A

delta fibers