The nervous system in cockroach consists of a series of ganglia in each segment, which are attached to a ventral nerve cord and a brain. Remaining part is situated along the ventral part of the body. CNS consist of two parts : brain and spinal cord. The nervous system of cockroach is spread throughout the body. Fig. Sympathetic nervous system increases defence system of body against stressful conditions. In the head region, the brain is represented by supra-oesophageal ganglion, which supplies nerves to antenna and compound eyes. Remaining part is situated along the ventral part of the body. Feature of cockroach 3. Nervous System of Cockroach (ii) Peripheral Nervous System : Consists of nerves, which are given off from the ganglia so as to innervate all parts of the body. - The head holds only a bit of nervous system. Classification of cockroach 2. Parasympathetic nervous system provides relaxation, comfort, pleasure at the time of rest. The nervous system of cockroach consists of a nerve ring and a ganglionated double ventral nerve cord, sub-oesophageal ganglion , circum– oesophageal connectives and double ventral nerve cord (Figure 4.13). Nervous system . Morphology- Head , Thorax , Abdomen 4. head, thorax and abdomen. Sensory System. Periplaneta americana is the common species of cockroach. Central Nervous System. Male cockroaches have pair of testes, genital pouch, vasa deferentia, seminal vesicles, ejaculatory duct and conglobate gland. Wings extend beyond the tip of the abdomen in males. Anatomy of Earthworm,Cockroach & Frog of Class 11. COCKROACH The slide contain about- 1. COCKROACH MORPHOLOGY. An adult cockroach is about 34 – 53 mm long. So, if the head of cockroach is cut off, it will still live for one week. ... circulatory system, excretory system, nervous system and reproduction. The document Doc: Cockroach- Respiratory and Nervous System NEET Notes | EduRev is a part of the NEET Course Biology Class 11. (iii) Sympathetic or Stomato-gastric Visceral Nervous System: Consists of a frontal ganglion, which is situated on the dorsal side of the oesophagus in the head. Difference between male and female cockroach 5. The body is segmented into three distinct regions, viz. Free PDF download of Class 11 Biology Chapter 7 - Structural Organisation in Animals Revision Notes & Short Key-notes prepared by expert Biology teachers from latest edition of CBSE(NCERT) books. In cockroach, there is an accessory pulsatile vesicle at the base of each antenna which also pumps blood. There are three thoracic ganglia and six abdominal ganglia. In spinal-cord, grey matter is on the inner side and white matter on the outer side. Go through our anatomy of cockroach class 11 ppt to understand reproductive process in cockroach. 12. Female cockroaches have a pair of ovaries, oviducts, median vagina, a pair of colleterial glands and spermathecae. 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