Feature of cockroach 3. 12. 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. Parasympathetic nervous system provides relaxation, comfort, pleasure at the time of rest. Female cockroaches have a pair of ovaries, oviducts, median vagina, a pair of colleterial glands and spermathecae. (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. 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. Sensory System. Periplaneta americana is the common species of cockroach. In cockroach, there is an accessory pulsatile vesicle at the base of each antenna which also pumps blood. An adult cockroach is about 34 – 53 mm long. 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. Fig. The nervous system of cockroach is spread throughout the body. ... circulatory system, excretory system, nervous system and reproduction. CNS consist of two parts : brain and spinal cord. Anatomy of Earthworm,Cockroach & Frog of Class 11. Wings extend beyond the tip of the abdomen in males. The document Doc: Cockroach- Respiratory and Nervous System NEET Notes | EduRev is a part of the NEET Course Biology Class 11. Remaining part is situated along the ventral part of the body. All you need of NEET at this link: NEET RESPIRATION Classification of cockroach 2. There are three thoracic ganglia and six abdominal ganglia. 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. Nervous system . Central Nervous System. Sympathetic nervous system increases defence system of body against stressful conditions. head, thorax and abdomen. The body is segmented into three distinct regions, viz. - The head holds only a bit of nervous system. It helps in the restoration and conservation of energy. Go through our anatomy of cockroach class 11 ppt to understand reproductive process in cockroach. Remaining part is situated along the ventral part of the body. So, if the head of cockroach is cut off, it will still live for one week. Difference between male and female cockroach 5. Brain has grey matter on the outer side and white matter on the inner side. COCKROACH The slide contain about- 1. 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). In the head, the supra-oesophageal ganglion represents the brain, which supplies nerves to … Male cockroaches have pair of testes, genital pouch, vasa deferentia, seminal vesicles, ejaculatory duct and conglobate gland. COCKROACH MORPHOLOGY. Morphology- Head , Thorax , Abdomen 4. 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. Eyes are the sense organs for vision and called photoreceptors. The head holds a bit of a nervous system while, the rest is situated along the ventral part of the body. Segmented into three distinct regions, viz oviducts, median vagina, a pair of colleterial glands and spermathecae NEET... 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