Test 4

Question 1

Myopathic

Answer 1

Problem with muscles

Question 2

Neurogenic

Answer 2

Problem with motor neuron and pre motor neuron

Question 3

Disease characteristics

Answer 3

Depends on what component of motor unit affected

-> Nerve cell body: motor unit disease
→ motor neuron axon/neuromuscular junction: peripheral Neuropathy
→ muscle degeneration: myopathy

Question 4

Criteria for distinguishing neurogenic versus myopathic disease

Answer 4

Myopathic: main symptom = muscle weakness/ wasting (atrophy) also leads to difficulty walking, lifting.

Neurogenic disease have: tendon reflexes lost, gradual weakness,fasiciculations (visual twitches)

Question 5

Causes viral:

Answer 5

Certain viruses can affect motor nerves selectively they may induce autoimmune disorder