The body is segmented into three distinct regions, viz. Female cockroaches have a pair of ovaries, oviducts, median vagina, a pair of colleterial glands and spermathecae. - The head holds only a bit of nervous system. Sympathetic nervous system increases defence system of body against stressful conditions. Remaining part is situated along the ventral part of the body. Remaining part is situated along the ventral part of the body. Parasympathetic nervous system provides relaxation, comfort, pleasure at the time of rest. CNS consist of two parts : brain and spinal cord. Go through our anatomy of cockroach class 11 ppt to understand reproductive process in cockroach. Nervous system . There are three thoracic ganglia and six abdominal ganglia. In the head region, the brain is represented by supra-oesophageal ganglion, which supplies nerves to antenna and compound eyes. In spinal-cord, grey matter is on the inner side and white matter on the outer side. COCKROACH The slide contain about- 1. 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. Central Nervous System. All you need of NEET at this link: NEET RESPIRATION Sensory System. The nervous system of cockroach is spread throughout the body. In cockroach, there is an accessory pulsatile vesicle at the base of each antenna which also pumps blood. (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. head, thorax and abdomen. Eyes are the sense organs for vision and called photoreceptors. Nervous System of Periplaneta: The nervous system of cockroach com­prises of: (a) Central nervous system comprising of a brain or supraoesophageal ganglion, sub-oesophageal ganglion, circumoesophageal connectives and the ventral nerve cord. The head holds a bit of a nervous system while, the rest is situated along the ventral part of the body. 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. Feature of cockroach 3. Wings extend beyond the tip of the abdomen in males. 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. 12. The document Doc: Cockroach- Respiratory and Nervous System NEET Notes | EduRev is a part of the NEET Course Biology Class 11. Classification of cockroach 2. So, if the head of cockroach is cut off, it will still live for one week. In the head, the supra-oesophageal ganglion represents the brain, which supplies nerves to … Morphology- Head , Thorax , Abdomen 4. An adult cockroach is about 34 – 53 mm long. 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