Give an account of the nervous system in cockroach.
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Nervous system of cockroach.
Brain or Supra Oesophageal Ganglion:
It is anterior most ganglionic mass above the oesophagus between the supporting apodermes of the tentorium. It comprises of the following components.
1. Protocerebrum: Represent the fused ganglia of the acron and preantennal segment. It is the anterior most and largest part of the brain consists of protocerebral lobes and optic lobes. It innervates the compound eyes and ocelli.
2. Deutocerebrum: It is the second or central part of the brain. Represent the fused ganglia of the antennal segment. It innervates antennae.
3. Tritocerebrum: It is the posterior part of the brain formed by the ganglia of the third or intercalary segment of the head. Innervates labrum and unite the brain with forntal ganglion.
Circum-oesophagus and joining supra-oesophageal ganglion with sub-oesophageal ganglion
II. Sub-oesophageal Ganglion: It is oval shaped, lines below the oesophagus in the head region. It is formed by the fusion of the ganglia of the Mandibular, maxillary and labial segments. It gives off paired nerves supplying their respective appendages.
III. The Ventral Nerve Cord:Consists of series of ganglia lying on the floor of thorax and abdomen.
1. Thoracic ganglia: The first three ganglia are situated one in each of the thoracic segment called thoracic ganglia. It controls the locomotory organ. Each ganglion gives off two pairs of principal nerves, one of which supplies the general musculature of the segment and the other innervates the muscles of the legs and wings.
2. Abdominal Ganglia: Six in number, lie in the abdomen. Each abdominal ganglion gives off a pair of principal nerves to the muscles of its segment.
3. Connective: These are two longitudinal cords, joining one pair of ganglia with those preceding and succeeding it.
4. Commissures: These are the transverse fibers; unite the pair of ganglia of the system.
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Brain or Supra Oesophageal Ganglion:
It is anterior most ganglionic mass above the oesophagus between the supporting apodermes of the tentorium. It comprises of the following components.
1. Protocerebrum: Represent the fused ganglia of the acron and preantennal segment. It is the anterior most and largest part of the brain consists of protocerebral lobes and optic lobes. It innervates the compound eyes and ocelli.
2. Deutocerebrum: It is the second or central part of the brain. Represent the fused ganglia of the antennal segment. It innervates antennae.
3. Tritocerebrum: It is the posterior part of the brain formed by the ganglia of the third or intercalary segment of the head. Innervates labrum and unite the brain with forntal ganglion.
Circum-oesophagus and joining supra-oesophageal ganglion with sub-oesophageal ganglion
II. Sub-oesophageal Ganglion: It is oval shaped, lines below the oesophagus in the head region. It is formed by the fusion of the ganglia of the Mandibular, maxillary and labial segments. It gives off paired nerves supplying their respective appendages.
III. The Ventral Nerve Cord:Consists of series of ganglia lying on the floor of thorax and abdomen.
1. Thoracic ganglia: The first three ganglia are situated one in each of the thoracic segment called thoracic ganglia. It controls the locomotory organ. Each ganglion gives off two pairs of principal nerves, one of which supplies the general musculature of the segment and the other innervates the muscles of the legs and wings.
2. Abdominal Ganglia: Six in number, lie in the abdomen. Each abdominal ganglion gives off a pair of principal nerves to the muscles of its segment.
3. Connective: These are two longitudinal cords, joining one pair of ganglia with those preceding and succeeding it.
4. Commissures: These are the transverse fibers; unite the pair of ganglia of the system.
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HEYA MATE ....Central Nervous System of Cockroach:
The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord.
Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. ... It is formed by the fusion of three pairs of ganglia. It represents the brain and is concerned chiefly with sensory function.
Peripheral Nervous System of Cockroach:
The nerves originating from the nerve ring and ventral nerve cord to innervate different parts of the body constitute the peripheral nervous system
Sympathetic Nervous System:
The autonomic or stomogastric or sympathetic or visceral nervous system of cockroach consists of some ganglia and their connectives. It includes the frontal, occipital, visceral or ingluvial and pre-ventricular ganglia. The nerves from these ganglia are connected with the supra-oesophageal ganglion.
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@CHOCOHOLIC15
The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord.
Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. ... It is formed by the fusion of three pairs of ganglia. It represents the brain and is concerned chiefly with sensory function.
Peripheral Nervous System of Cockroach:
The nerves originating from the nerve ring and ventral nerve cord to innervate different parts of the body constitute the peripheral nervous system
Sympathetic Nervous System:
The autonomic or stomogastric or sympathetic or visceral nervous system of cockroach consists of some ganglia and their connectives. It includes the frontal, occipital, visceral or ingluvial and pre-ventricular ganglia. The nerves from these ganglia are connected with the supra-oesophageal ganglion.
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@CHOCOHOLIC15
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