Respiratory System of Cockroach | Dr.BGR Publications

Respiration is an act of breathing. The movement of "O" is very important. Yes, Lord Vaayu play an important role in our life.

1. respiratory system of cockroach Dr. BGR

2. Agenda Introduction Respiration Summary

3. Scientific Classification Kingdom: Animalia Phylum: Arthropoda Class: Insecta Note All animals are members of the Animalia

4. Respiration metabolic process carried out in all living organisms

5. Respiration process mainly involves the synthesis of energy intake of oxygen (O) liberation of carbon dioxide (CO 2 ) O : colourless , odourless , tasteless  gas CO 2 : colorless & non-flammable gas at normal temperature and pressure   Note

6. respiratory system A network of trachea known as the tracheal system T rachea: tubular structure Note

7. spiracles S mall openings R egulated by muscular sphincters Used to breathe in oxygen-rich air O pen into the tracheal tubes T racheal tubes: network of air tubes

8. spiracles found only in insects Insects Beetles, flies, bees, butterflies & earwigs: insects. spiders are not insects Note

9. tracheoles Trachea: subdivided into a thinner tube called tracheoles. C ontain: network of fluids A ir rich in CO 2

10. Mechanism of respiration R espiration includes two phases 1. Inspiration 2. Expiration

11. Inspiration Intake of atmospheric air into the tracheal system: inspiration Inspiration: passive process T ergo sternal muscles: relax Thoracic spiracles: kept open Abdominal spiracles: kept shut In good time, air is carried towards tracheoles & diffuses into tissues

12. Expiration Elimination of carbon dioxide: expiration. Expiration: active process T ergo sternal muscles: contract Thoracic spiracles: shut Stomach spiracles: kept open.

13. CO 2 Due to metabolism CO 2 produced in tissues

14. diffusion Major amount of CO 2 is sent out by diffusion Respiratory movements: coordinated by the nervous system Diffusion: through cuticle Note

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