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Physiology

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Nerve Muscle Physiology

Question
5 out of 24
 

Fast axonal transport is by all except? (AIIMS NOV 2007)



A Dynenin
B Kinesin

C Microtubule
D Neurofilaments

Ans. D Neurofilaments
  1. Fast axoplasmic transport (20-400mm/day): use molecular motors which run on Microtubule filaments

i. Anterograde: This is driven by kinesin

ii. Retrograde: This is driven by Dyenin

  1. Slow axoplasmic transport (0.2-4mm/day)
  2. This is always anterograde. The cytoskeleton (Microtubule & Neurofilament) moves as a whole due to the continual polymerization at the leading end (+ end) and depolymersation at the trailing end (- end).

Nerve Muscle Physiology Flashcard List

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