FoCM 1 - Upper Limb Flashcards

1
Q

Define Dermatome vs Myotome:

A

Dermatome - Area of skin mainly supplied by one spinal nerve

Myotome - Group of muscles supplied by a single spinal nerve root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Upper vs lower motor neurons?

A

Upper motor neuron:

  • Originates in motor region of cerebral cortex or brain stem
  • Carries motor info to lower motor neurons

Lower Motor Neurons:

  • Originate in spinal cord or cranial nerve nuclei
  • Terminates in skeletal muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Differences between an UMN lesion and a LMN lesion

A

Upper Motor Neuron lesion:

  • Increased Tone
  • Hyperreflexia
  • Weakness
  • Upward plantar reflex (normal is downward)

Lower Motor Neuron Lesion:

  • Reduced Tone
  • Hyporeflexia
  • Weakness/atrophy
  • Muscle Fasciculation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly