Peripheral Nerve Review

Question 1

The myelin sheath in peripheral nerves consists of________ ________

Answer 1

Schwann cells

Question 2

These are wrapped around individual axon fibers.

Answer 2

Schwann cells

Question 3

The ________ is the outermost membrane of an individual nerve fibre in the peripheral nervous system.

Answer 3

neurolemma

Question 4

Gaps between the Schwann cells are called nodes of _______.

Answer 4

Ranvier

Question 5

________ __________means that impulses travel faster along myelinated fibers than along unmyelinated ones.

Answer 5

Saltatory conduction

Question 6

Axons are covered by 3 additional connective tissue layers:

Answer 6

ENDONEURIUM
PERINEURIUM
EPINEURIUM

Question 7

surrounds individual axons

Answer 7

ENDONEURIUM

Question 8

surrounds bundles of axons

Answer 8

PERINEURIUM

Question 9

surrounds the entire peripheral nerve

Answer 9

EPINEURIUM

Question 10

T/F Peripheral nerves carry predominately BOTH afferent (sensory/proprioception) and efferent (motor) information.

Answer 10

True

Question 11

T/F Nerves are NOT vascular

Answer 11

False they are