1st exam

Question 1

The DRG is made up of what type of neurons?

Answer 1

Pseudounipolar

Question 2

What myelinates the PNS?

Answer 2

Schwann Cells

Question 3

What is the functional cell for energy (ATP)?

Answer 3

Mitochondria

Question 4

Multiple branches to the cells body that carries signals thru the brain/spinal cord?

Answer 4

multipolar

Question 5

Cell bodies of the PNS are made up of?

Answer 5

Pseudounipolar or multipolar

Question 6

most common cell causing tumor?

Answer 6

astrocytoma

Question 7

umbilicus is at what dermatome level?

Answer 7

T-10

Question 8

MS is caused by a defect of?

Answer 8

autoimmune attack of myelin (Schwann cells)

Question 9

Forms glycoproteins and lysosomes

Answer 9

Golgi bodies

Question 10

thick sheath covering a fascicle and nerve fibers

Answer 10

perineurium

Question 11

the minimum amount of neurons in a reflex

Answer 11

2

Question 12

in the ventricular zone, neurons are?

Answer 12

pleuripotent (stem cell)

Question 13

satellite cells are similar to what in the CNS?

Answer 13

astrocytes

Question 14

what produces CSF?

Answer 14

ependymal cells

Question 15

a strip of skin innervated by a single spinal nerve?

Answer 15

dermatome

Question 16

the patellar reflex is an example of?

Answer 16

myotactical fibers

Question 17

crossed effect is an example of?

Answer 17

withdrawal reflex (aka flexor reflex)

Question 18

type A axons are?

Answer 18

largest in diameter

Question 19

type C axons are?

Answer 19

slowest (unmyelinated)

Question 20

the type of motor neuron responds to muscle stretch

Answer 20

gamma

Question 21

golgi tendons are an example of?

Answer 21

mechanoreceptors

Question 22

which of the following have free nerve endings

Answer 22

thermoreceptors

Question 23

motor supply of a muscle spindle is by?

Answer 23

gamma type neurons

Question 24

satellite cells cover neuronal cell bodies in the?

Answer 24

PNS

Question 25

multipolar neurons have several fibers from one?

Answer 25

cell body

Question 26

covers only one fiber and surrounds neuronal fibers?

Answer 26

endonerium

Question 27

surrounds a fascicle?

Answer 27

perineurium

Question 28

form glycoproteins and lysosomes?

Answer 28

golgi bodies

Question 29

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

Answer 29

C-fibers

Question 30

fat myelinated motor fibers?

Answer 30

alpha fibers

Question 31

ventricular zone contains?

Answer 31

pleuripotent cells

Question 32

the marginal zone has either?

Answer 32

neurons or glial cells

Question 33

cells that mylinate the PNS

Answer 33

schwann cells

Question 34

satellite cells are analogous to?

Answer 34

astrocytes

Question 35

a mylination disease?

Answer 35

multiple sclerosis

Question 36

an astrocytomas account for what percentage of brain tumors?

Answer 36

23%

Question 37

a territory from which a sensory unit can be excited?

Answer 37

receptor field

Question 38

receive pain, temperature, “thermoreceptors”

Answer 38

free nerve endings

Question 39

a simple reflex contains how many neurons?

Answer 39

2

Question 40

a secondary sensory innervations that detects degree of stretch?

Answer 40

flowerspray endings

Question 41

a knee jerk is what type of reflex?

Answer 41

myotactic reflex; 1a fiber

Question 42

golgi tendon organs are found at?

Answer 42

muscle tendon junctions

Question 43

a flexor reflex/withdrawal reflex is what type of effect?

Answer 43

crossed effect

Question 44

the cauda equina is located at?

Answer 44

L2-S2

Question 45

the epidural space has?

Answer 45

fat pad

Question 46

what myelinates the CNS?

Answer 46

oligodendroctyes

Question 47

what type of fiber responds to muscle stretch in patella reflex?

Answer 47

alpha

Question 48

The PNS is derived from the ___ cell?

Answer 48

Neural Crest Cell