PNS Final

Question 1

The PNS is derived from…..

Answer 1

Neural Crest Cells

Question 2

The DRG is made up of what type of neurons?

Answer 2

Pseudounipolar

Question 3

What myelinates the PNS?

Answer 3

Schwann Cells

Question 4

What is the functional cell for energy?

Answer 4

Mitochondria

Question 5

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

Answer 5

Multipolar

Question 6

Cell bodies of the PNS are made up of?

Answer 6

Pseudounipolar or Multipolar

Question 7

Most common cell causing tumor?

Answer 7

Astrocytoma

Question 8

Umbilicus is at what dermatome level?

Answer 8

T10

Question 9

MS is cause by a defect of?

Answer 9

Autoimmune attack of myelin (Schwann cells?

Question 10

Forms Glycoproteins and Lysosomes?

Answer 10

Golgi Bodies

Question 11

Thick sheath covering a fascicle and nerve fibers?

Answer 11

Perineurium

Question 12

The minimum amount of neurons in a reflex?

Answer 12

2

Question 13

In the ventricular zone, neurons are?

Answer 13

Pleuripotent (Stem Cell)

Question 14

Satellite cells are similar to what in the CNS?

Answer 14

Astrocytes

Question 15

What produces CSF?

Answer 15

Ependymal Cells

Question 16

A strip of skin innervated by a single spinal nerve?

Answer 16

Dermatome

Question 17

The patellar reflex is an example of?

Answer 17

Myotactic 1a fibers

Question 18

Crossed effect is an example of?

Answer 18

Withdrawl reflex aka Flexor Reflex

Question 19

Type A axons are?

Answer 19

Largest in diameter

Question 20

Type C axons are?

Answer 20

Slowest (unmyelinated)

Question 21

The type of motor neuron responds to muscle stretch

Answer 21

Gamma