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PNS > Test 1 > Flashcards

Test 1 Flashcards

1
Q

The PNS is derived from the?

A

Neural Crest Cell

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2
Q

The DRG is made up of what type of neurons

A

Pseudounipolar

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3
Q

What myelinated the PNS?

A

Schwann Cells

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4
Q

What is the final cell for energy?

A

Mitochondria

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5
Q

Multiple branches to the cell body that carries signal through the brain/spinal cord?

A

Multipolar

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6
Q

Cell bodies of the PNS are made up of?

A

Pseudounipolar or Multipolar

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7
Q

Most common cell causing tumor?

A

Astrocytoma

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8
Q

Umbilicus is what dermatome level?

A

T-10

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9
Q

MS is cause by a defect of?

A

Autoimmune attack of myelin (Schwann cells)

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10
Q

Forms Glycoproteins and Lysosomes

A

Golgi Bodies

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11
Q

Thick sheath covering a fascicle and nerve fibers?

A

Perineurium

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12
Q

The minimum amount of neurons in a reflex

A

2

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13
Q

In the ventricular zone, neurons are?

A

Pleuripotent

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14
Q

Satellite cells are similar to what in the CNS?

A

Astrocytes

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15
Q

What produces CSF?

A

Ependymal cells

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16
Q

A strip of skin innervated by a single spinal nerve?

A

Dematome

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17
Q

The patellar reflex is an example of?

A

Myotatic 1a fibers

18
Q

Crossed effect is an example of?

A

Withdrawal reflex aka Flexor Reflex

19
Q

Type A axons are?

A

Largest in diameter

20
Q

Type C axons are

A

Slowest (unmyelinated)

21
Q

The type of motor neurons respond to muscle stretch

A

Gamma

22
Q

Golgi tendon are an example of?

A

Mechanoreceptors

23
Q

Which of the following have free nerve endings

A

Thermoreceptors

24
Q

Motor supply of a muscle spindle is by?

A

Gamma type neurons

25
Q

Satellite cells cover neuronal cell bodies in the?

A

PNS

26
Q

Multipolar neurons have several fibers from one?

A

Cell Body

27
Q

Covers only one fiber and surrounds neuronal fibers?

A

Endoneurium

28
Q

Surrounds a Fasicle?

A

Perineurium

29
Q

Small unmyelinated sensory fibers that pick up pain, temp, and touch?

A

C-fibers

30
Q

Fat myelinated motor fibers?

A

Alpha Fibers

31
Q

The Marginal zone has either?

A

Neurons or Glial Cells

32
Q

Satellite Cells are analogous to?

A

Astrocytes

33
Q

An Astrocytomas account for what percentage of brain tumors?

A

23%

34
Q

A territory from which a sensory unit can be excited?

A

Receptor Field

35
Q

A secondary sensory innervations that detect degree of stretch?

A

Flowerspray endings

36
Q

A knee jerk is what type of reflex?

A

Myotatic reflex - 1a fibers

37
Q

Golgi Tendon Organs are found at?

A

Muscle Tendon Junctions

38
Q

The Cauda Equine is located at?

A

L2-S2

39
Q

The epidural space has?

A

Fat Pad

40
Q

What myleninates the CNS?

A

Oligodendrocytes

PNS (5 decks)

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