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 (CO2)
O: colourless, odourless, tasteless gas
CO2 : colorless & non-flammable gas at normal temperature and pressure
Note

6. RESPIRATORY SYSTEM
A network of trachea known as the tracheal system
Trachea: tubular structure
Note

7. SPIRACLES
• Small openings
• Regulated by muscular sphincters
• Used to breathe in oxygen-rich air
• Open into the tracheal tubes
• Tracheal tubes: network of air tubes
spiracles tracheal 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.
 Contain: network of fluids
 Air rich in CO2

10. MECHANISM OF RESPIRATION
Respiration includes two phases
1. Inspiration
2. Expiration

11. INSPIRATION
 Intake of atmospheric air into the tracheal system: inspiration
 Inspiration: passive process
 Tergo 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
 Tergo sternal muscles: contract
 Thoracic spiracles: shut
 Stomach spiracles: kept open.

13. CO2
• Due to metabolism CO2 produced in tissues

14. DIFFUSION
 Major amount of CO2 is sent out by diffusion
 Respiratory movements: coordinated by the nervous system
Diffusion: through cuticle
Note

15. THANK YOU
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