Question

How many number of segmental ganglia are their in cockroach nervous system. Mention their location.​

Answer 1

Answer

There are nine segmental ganglia in cockroach nervous system. 3 in thoraxic reason and 6 in abdominal reason.

• Frist segmental ganglia is found in prothorax.
• second segmental ganglia is found in mesothorax.
• Third segmental ganglia in Metathorax
• Fourth segmental ganglia is found in 1st abdominal segment.
• Fifth segmental ganglia is found in 2nd abdominal segment.
• Sixth segmental ganglia is found in 3nd abdominal segment.
• Seventh segmental ganglia is found in 4nd abdominal segment
• Eighth segmental ganglia is found in 6nd abdominal segment
• Ninth segmental ganglia is found in 7nd abdominal segment

Note : The segmental ganglia is absent in 5th abdominal segment.

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