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Flashcards in PNS Final Deck (21)
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1

The PNS is derived from.....

Neural Crest Cells

2

The DRG is made up of what type of neurons?

Pseudounipolar

3

What myelinates the PNS?

Schwann Cells

4

What is the functional cell for energy?

Mitochondria

5

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

Multipolar

6

Cell bodies of the PNS are made up of?

Pseudounipolar or Multipolar

7

Most common cell causing tumor?

Astrocytoma

8

Umbilicus is at what dermatome level?

T10

9

MS is cause by a defect of?

Autoimmune attack of myelin (Schwann cells?

10

Forms Glycoproteins and Lysosomes?

Golgi Bodies

11

Thick sheath covering a fascicle and nerve fibers?

Perineurium

12

The minimum amount of neurons in a reflex?

2

13

In the ventricular zone, neurons are?

Pleuripotent (Stem Cell)

14

Satellite cells are similar to what in the CNS?

Astrocytes

15

What produces CSF?

Ependymal Cells

16

A strip of skin innervated by a single spinal nerve?

Dermatome

17

The patellar reflex is an example of?

Myotactic 1a fibers

18

Crossed effect is an example of?

Withdrawl reflex aka Flexor Reflex

19

Type A axons are?

Largest in diameter

20

Type C axons are?

Slowest (unmyelinated)

21

The type of motor neuron responds to muscle stretch

Gamma