Neuro Phys 2

Question 1

What is a upper motor neuron?

Answer 1

Originate in the cerebral cortex or brain stem and terminate in the spinal cord

Affects groups of muscles

Question 2

What is an lower motor neuron?

Answer 2

Receives upper motor impulses and connect the spinal cord and brain to the muscle fibres

Can affect 1 muscle

Question 3

What are posterior nerve roots?

Answer 3

Sensory and Afferent

Question 4

What are anterior nerve roots?

Answer 4

Motor and Efferent

Question 5

What do anterior nerve roots deal with?

Answer 5

Efferent neutrons go through the ventral and finish in the effector muscles

Question 6

What do posterior nerve roots deal with?

Answer 6

Impulses come through the dorsal horn through the posterior horn

Question 7

Describe common symptoms of upper motor neurone lesions.

Answer 7

High tone, muscle weakness, increased reflex (+ve Babinski)

Question 8

Describe common symptoms of lower motor neurone lesions.

Answer 8

Low tone, muscle weakness, lack of reflex

Question 9

Upper motor neuron conditions

Answer 9

Stroke, MS, brain injury, Pd

Question 10

Lower motor neuron conditions

Answer 10

GBS