TB9 BB Lecture 1;

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  • Created by: mint75
  • Created on: 02-05-16 12:37

1. In terms of facial muscle connectivity, upper motorneuron lesions cause?

  • No input to upper OR lower face on the whole of one half of face
  • No input to lower part of one half of face
  • No input to upper OR lower face on the whole of both halves of face
  • No input to upper part of one half of face
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2. What is a skeletal muscle?

  • When at least one end (the origin) is connected to a bone through a tendon
  • When both ends (both origins) are connected to a tendon through a bone
  • When at least one end (the origin) is connected to a tendon through a bone
  • When both ends (both origins) are connected to a bone through a tendon

3. What are all voluntary and reflex movements brought about by?

  • Contraction of striated muscles
  • Relaxation of striated muscles
  • Interactions between protein and mysoin
  • Cortical activity on striated areas of somatosensory cortex

4. What is 'recruitment', which creates graded contractions?

  • The average strength of the action potentials in the 'pool' of motorneurons for a given muscle
  • The specific number of alphaneurones active at any given time
  • How many motorneurons and muscle fibres are activated at approximately the same time
  • The specific number of motor neurones and muscle fibres active at any given time

5. A single neuron through the nerve can...

  • Cause a single movement
  • Interact with many muscle fibres
  • Cause many movements
  • Interact with a single muscle fibre

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