Function of the peripheral nervous system of the cockroach
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The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord.
The supra-oesophageal ganglion or cerebral ganglion is a bilobed structure situated in the head in front of oesophagus, above the tentorium and almost between the bases of the antennae. It is formed by the fusion of three pairs of ganglia. It represents the brain and is concerned chiefly with sensory function.
The supra-oesophageal ganglion or cerebral ganglion is a bilobed structure situated in the head in front of oesophagus, above the tentorium and almost between the bases of the antennae. It is formed by the fusion of three pairs of ganglia. It represents the brain and is concerned chiefly with sensory function.
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The peripheral nervous system consists of nerves starting from the ganglia of central nervous system and supplying to various organs in the periphery. From the brain arises a pair of optic and antennary nerves supplying to eyes and antennae respectively. The suboesophageal ganglia supplies paired nerves to mandibles, maxillae and labium.The thoracic and first five abdominal ganglia give off paired segmental nerves to appendages, muscles and other structures. From the sixth abdominal ganglion arise several nerves which are supplied to different parts of sixth and the remaining posterior segments.
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