L11: Nerve injury

Question 1

what nerve injury is caused by compression and results in the temporary loss of motor and sensory function due to blockage of nerve conduction?

Answer 1

neuropraxia

Question 2

what class of nerve injury is classified as crush injury and is characterized by damage to both axon and myelin sheath ?

Answer 2

axonomesis

Question 3

what is an example of axonomesis?

Answer 3

stretch injuries

Question 4

complete anatomical severance of the nerve is known as?

Answer 4

neuromesis

Question 5

what is injured in axonmesis ?

Answer 5

myelin sheath and axon

Question 6

what is wallerian degeneration ?

Answer 6

Wallerian degenerationis a process that results when a nerve fiber is cut or crushed, in which the part of the axon separated from the neuron’s cell body degenerates distal to the injury.

Question 7

what is the nerve conduction velocity test ?

Answer 7

An electrical test that is used to determine the adequacy of the conduction of the nerve impulse as it courses down a nerve.
This test is used to detect signs of nerve injury.

Question 8

what is an electromyography test?

Answer 8

Electromyography (EMG) is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons).

Question 9

neuropraxia , axonmesis , and neuro mesis are nerve injuries under the classification of peripheral nerve injury by ____

Answer 9

seddon

Question 10

list , in increasing order of severity , the degrees of nerve injury under the classification of peripheral nerve injury by sunderland

Answer 10

Myelin 
Axon 
Endoneural tube and its contents 
Perineurium 
Entire nerve trunk.