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. Periplaneta americana is the common species of cockroach. Male cockroaches have pair of testes, genital pouch, vasa deferentia, seminal vesicles, ejaculatory duct and conglobate gland. Sensory System. In spinal-cord, grey matter is on the inner side and white matter on the outer side. In the head region, the brain is represented by supra-oesophageal ganglion, which supplies nerves to antenna and compound eyes. Eyes are the sense organs for vision and called photoreceptors. The document Doc: Cockroach- Respiratory and Nervous System NEET Notes | EduRev is a part of the NEET Course Biology Class 11. Morphology- Head , Thorax , Abdomen 4. Anatomy of Earthworm,Cockroach & Frog of Class 11. Female cockroaches have a pair of ovaries, oviducts, median vagina, a pair of colleterial glands and spermathecae. Central Nervous System. Parasympathetic nervous system provides relaxation, comfort, pleasure at the time of rest. So, if the head of cockroach is cut off, it will still live for one week. In cockroach, there is an accessory pulsatile vesicle at the base of each antenna which also pumps blood. COCKROACH MORPHOLOGY. In the head, the supra-oesophageal ganglion represents the brain, which supplies nerves to … 12. It helps in the restoration and conservation of energy. Difference between male and female cockroach 5. Remaining part is situated along the ventral part of the body. 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. - The head holds only a bit of nervous system. 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). Go through our anatomy of cockroach class 11 ppt to understand reproductive process in cockroach. Classification of cockroach 2. ... circulatory system, excretory system, nervous system and reproduction. The body is segmented into three distinct regions, viz. Feature of cockroach 3. Wings extend beyond the tip of the abdomen in males. Sympathetic nervous system increases defence system of body against stressful conditions. (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. 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. All you need of NEET at this link: NEET RESPIRATION Fig. CNS consist of two parts : brain and spinal cord. head, thorax and abdomen. An adult cockroach is about 34 – 53 mm long. Nervous system . 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