FoCM 1 - Upper Limb Flashcards Preview

Yr 2 Nervous System > FoCM 1 - Upper Limb > Flashcards

Flashcards in FoCM 1 - Upper Limb Deck (3)
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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

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
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