day thirteen: peripheral nerves

Question 1

motor

Answer 1

nerve fibers originate from the ventral horn of the spinal cord and terminate at motor end plate located in the muscle

Question 2

sensory

Answer 2

nerve fibers originate form the dorsal root ganglia and terminate as free nerve endings

Question 3

MOVE

Answer 3

motor
ventral efferent
- motor in the front

Question 4

SAD

Answer 4

sensory
afferent
dorsal root
- sensory in the back

Question 5

axons can measure up to

Answer 5

3 ft or more in length

Question 6

epineurium is the

Answer 6

outermost layer of a nerve

Question 7

epineurium fx:

Answer 7

cusions from external pressure and allows movement

Question 8

perineurium fx:

Answer 8

connective tissue that makes up the wall of the fascicles (bundles)

Question 9

perineurium is the

Answer 9

middle layer

Question 10

endoneurium is

Answer 10

the inner most layer

Question 11

endoneurium fx

Answer 11

surround individual nerve fibers/supports and protects the individual axons

Question 12

mesoneurium fx

Answer 12

slick loose connective tissue

- facilitates gliding

Question 13

list three things that make a nerve happy:

Answer 13

space
movement
limited sustained tension

Question 14

three good things that movement of the nerves does:

Answer 14

improves blood flow
facilitates gliding of fascicles and nerves
facilitates axoplasmic transport

Question 15

movement prevents what?

Answer 15

“wrinkling” of axons within the endoneurium

Question 16

where would “wrinkling” occur?

Answer 16

the endoneurium

Question 17

nerve vasculature is provided by

Answer 17

large vessels that divide into ascending and descending branches that anastomose ot the nerve

Question 18

at what percent elongation does the blood flow begin to stop?

Answer 18

8%