Question

Do invertebrate axons have nodes of Ranvier? Explain

Do invertebrate axons have nodes of Ranvier? Explain

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Answer #1

Answer


No, invertebrate axons do not have nodes of Ranvier.

  • Nodes of Ranvier are the gaps formed by myelin sheath in the myelinated neurons.
  • The nerve impulse jumps from one node of Ranvier to other in order to pass through the axon.
  • Invertebrate axons do not posses myelin sheath around the axon and hence it do not have nodes in between.
  • Invertebrate neurons will have continous condition which is slower than the saltatory conduction present in myelinated neurons.
  • Due to lack of myelin sheath in invertebrates, it does not have nodes of Ranvier.
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