PNS

Question 1

the myelin sheath is peripheral nerves consists of __________ cells wrapped around individual axon fibers

Answer 1

Schwann

Question 2

gaps between the schwann cells are called _______of ________

Answer 2

nodes of ranvier

Question 3

__________ ___________ means that impulses travel faster along myelinated fibers than along unmyelinated ones

Answer 3

saltatory conduction

Question 4

axons are covered by 3 additional connective tissue layers ____________,___________ and ____________

Answer 4

endoneurium, perineurium and epineurium

Question 5

the endoneurium surrounds ___________ axons

Answer 5

individual

Question 6

the perineurium surrounds _________ of axons

Answer 6

bundles

Question 7

the epineurium surrounds the entire _________ ________

Answer 7

peripheral nerve

Question 8

peripheral nerves carry predominantly both ________ and ________ information

Answer 8

afferent and efferent

Question 9

T/F some peripheral nerves carry autonomic fibers

Answer 9

true

Question 10

a cause of PNS neuronal damage includes ________ _______

Answer 10

direct trauma

Question 11

___________ or crush injuries include MVAs or industrial accidents

Answer 11

severence

Question 12

__________ injuries such as stingers or burners are a result of direct trauma

Answer 12

traction