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Control and Co-ordination — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination3 Marks
Question
Explain the structure of cyton.
✓

Answer

  1. Cyton is the main body of a neuron or nerve fibre.
  2. The cyton has a distinct central nucleus with a nucleolus and neuroplasm.
  3. Cytoplasm surrounds the nucleus around which there are neurofibrils, Nissl’s granules and other cell organelles.
  4. Nissl’s granules are rich in ribosomes and proteins.
  5. Neurofibrils play an important role in transmission of nerve impulse.
  6. The cytons are generally found inside the brain, spinal cord (CNS) and in the ganglia.
  7. Cytons within CNS form ‘nuclei’ while those present outside CNS in nerves form ‘ganglia’.

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