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A&P 150 > Ch 11: Continued > Flashcards

Ch 11: Continued Flashcards

1
Q

Soma

A

Neuron cell body

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2
Q

Nucleus on soma

A

Contain DNA

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3
Q

Mitochondria on soma

A

Produce ATP

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4
Q

Nissl bodies on soma

A

Produce proteins
- just like a Rough ER

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5
Q

Golgi apparatus on soma

A

Modify, package and ship proteins

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6
Q

Dendrites

A

Receive messages from neurons as electrical impulses

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7
Q

Axon

A

Carry AP away from cell body

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8
Q

Trigger zone

A

To generate AP

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9
Q

What are two types of trigger zones

A
  • soma side
  • axon side
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10
Q

Soma side trigger zone

A

Referred as axon hillock

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11
Q

Axon side trigger zone

A

Referred as initial segment

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12
Q

Myelin sheath

A

Insulate axon to increase velocity of AP
-(hopping motion)

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13
Q

Mode of Ranvier

A

Space btw axon
- * saltatory conduction *
- also with hopping motion

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14
Q

Two types of myelin sheath

A
  • oligodendrocyte
  • Schwann cell
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15
Q

What is oligodendrocyte of myelin sheath

A

Myelin sheath in CNS

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16
Q

What is Schwann cell in myelin sheath

A

Sheath in PNS

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17
Q

Nucleus in cell bodies

A

Collection of cell bodies in CNS

18
Q

Ganglion

A

Collection of cell bodies in PNS

19
Q

Tracts on axon

A

Collection of axon in CNS

20
Q

Periphreal nerves of axon

A

Collection of axon in PNS

21
Q

Ascending tracts

A

Tracts ascending towards brain

22
Q

Descending tracts

A

Tract’s descending from brain

23
Q

Plexus

A

Extensive network of axons, outside of CNS

24
Q

Astrocyte

A

Cell that looks like star
- barrier formed btw blood and brain

25
Q

Blood brain barrier

A

Barrier from blood (circulatory) and brain

26
Q

Ventricle

A

4 cavities in brain

27
Q

Ependymal cells

A

Lining of cavity in the brain, brain stem, and spinal fluid

28
Q

Cerebrospinal fluid

A

Fluid in brain and spinal cord

29
Q

Choroid plexus

A

Produces cerebrospinal fluid

30
Q

Cilia in the choroid plexus

A

Helps move fluid to brought cavities of brain

31
Q

Microglial cell

A

Provide immunity for cells

32
Q

What are the two Myelinated axons

A
  • node of ranvier
  • AP
33
Q

Characteristics of grey matter

A
  • unmyelinated axons
  • cell bodies
  • dendrite
  • neuroglia
34
Q

What is grey matter

A

Peripheral aspect (outer)

35
Q

What is white matter

A

Central aspect (inner)

36
Q

Characteristics of white matter

A
  • myelinated axons
37
Q

What does action potential do

A

Produce electrical signals (information) to other parts of the body

38
Q

Intracellular fluid

A

K+
* large proteins *

39
Q

Ligand

A

Chemical called acetylcholine
- sodium potassium pump

40
Q

What is a neuron at rest that’s largely negative

A

Due to large proteins at rest

E.C

41
Q

If CNS is damaged due to multiple sclerosis, what is also damaged?

A
  • oligodendrocytes

A&P 150 (26 decks)

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