PNS test 1

Question 1

The PNS is derived from the ________ cell.

Answer 1

Neural crest cell

Question 2

DRG is made up of what type of neurons?

Answer 2

Pseudounipolar

Question 3

What myelinated the PNS?

Answer 3

Schwaan Cells

Question 4

What is the functional cell for energy (ATP)?

Answer 4

Mitochondria

Question 5

Multiple branches to the cell body that carries signals through the 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

T-10

Question 9

MS is caused by a defect of?

Answer 9

autoimmune attack of myelin (Schwaan 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

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

Question 22

Golgi tendons are an example of?

Answer 22

Mechanoreceptors

Question 23

Which of the following have free nerve endings?

Answer 23

Thermoreceptors

Question 24

Motor supply of a muscle spindle is by?

Answer 24

Gamma type neurons

Question 25

Satellite cells cover neuronal cell bodies in the?

Answer 25

PNS

Question 26

Multipolar neurons have several fibers from one?

Answer 26

Cell Body

Question 27

Covers only one fiber and surrounds neuronal fibers?

Answer 27

Endoneurium

Question 28

Surrounds a Fascicle?

Answer 28

Perineurium

Question 29

Form glycoproteins and lysosomes?

Answer 29

golgi bodies

Question 30

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

Answer 30

C-Fibers

Question 31

Fat myelinated motor fibers?

Answer 31

Alpha Fibers

Question 32

Ventricular zone contains?

Answer 32

Pleuripotent cells

Question 33

The Marginal zone has either?

Answer 33

Neurons or Glial cells

Question 34

Cells that Myleinate the PNS?

Answer 34

schwaan cells

Question 35

Satellite cells are analogous to?

Answer 35

Astrocytes

Question 36

A mylination desease?

Answer 36

Multiple Sclerosis

Question 37

An Astrocytomas account for what percentage of brain tumors?

Answer 37

23%

Question 38

A territory from which a sensory unit can be excited?

Answer 38

Receptor Field

Question 39

Receive pain a temperature, “Thermoreceptors”?

Answer 39

Free Nerve endings

Question 40

A simple reflex contains how many neurons?

Answer 40

Two

Question 41

A secondary sensory innervations that detects degree of stretch?

Answer 41

Flowerspray endings

Question 42

A Knee jerk is what type of reflex?

Answer 42

Myotatic reflex- 1a fiber

Question 43

Golgi Tendon Organs are found at?

Answer 43

Muscle tendon Junctions

Question 44

A Flexor Reflex/Withdrawel Reflex is what type of effect?

Answer 44

Crossed Effect

Question 45

The Cauda Equina is located at?

Answer 45

L2-S2

Question 46

What Myelinates the CNS?

Answer 46

Oligodendrocytes

Question 47

The epidural space has?

Answer 47

a fat pad

Question 48

What type of fiber responds to muscle stretch in Patella reflex?

Answer 48

Alpha