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Question

In a medullated nerve fibre, the conduction of Impulse is faster due to the presence of _______________.
  1. pericytes
  2. endoneurium and epineurium
  3. myelin sheath and nodes of Ranvier
  4. Nissil's granules.

A
pericytes
B
myelin sheath and nodes of Ranvier
C
endoneurium and epineurium
D
Nissil's granules.
Solution
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The correct option is C myelin sheath and nodes of Ranvier
Medullated nerve fibres are covered by myelin sheath. The conduction of impulse is faster in medullated nerve fibre due to the presence of myelin sheath and nodes of Ranvier.

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