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Internal Systems

Internal Systems. Digestive - obtain and assimilate food, remove waste products Excretory - remove nitrogenous waste products, involved in internal chemical and water balance Respiratory - obtain oxygen and removal of carbon dioxide. Internal Systems.

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Internal Systems

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  1. Internal Systems • Digestive - obtain and assimilate food, remove waste products • Excretory - remove nitrogenous waste products, involved in internal chemical and water balance • Respiratory - obtain oxygen and removal of carbon dioxide Insects and People Internal Morphology

  2. Internal Systems • Muscular - “movement,” internally and through the environment • Circulatory - transportation of items throughout the body, wound healing, storage • Nervous - system of communication between stimuli and the organism Insects and People Internal Morphology

  3. Internal Systems • Reproductive - procreation • Endocrine - growth, reproduction, “change,” internal communication Insects and People Internal Morphology

  4. The Insect Digestive System Insects and People Internal Morphology

  5. Functions of the digestive tract • Ingestion - process of feeding, taking food into the body • Remember different types of mouthparts? • Digestion - breakdown of “food” into a form that can be assimilated by the body Insects and People Internal Morphology

  6. Functions of the digestive tract • Absorption - passage of digested food molecules from the digestive tract to the blood and body cavity • Egestion - elimination of undigested food waste from the body Insects and People Internal Morphology

  7. The Insect Digestive System Insects and People Internal Morphology

  8. The Insect Digestive SystemForegut Insects and People Internal Morphology

  9. The Insect Digestive SystemForegut Insects and People Internal Morphology

  10. The Insect Digestive SystemForegut - Midgut Insects and People Internal Morphology

  11. The Insect Digestive SystemMidgut Insects and People Internal Morphology

  12. The Insect Digestive SystemMidgut Insects and People Internal Morphology

  13. The Insect Digestive SystemMidgut - variation Insects and People Internal Morphology

  14. The Insect Digestive SystemMidgut - Hindgut Insects and People Internal Morphology

  15. The Insect Digestive SystemHindgut Insects and People Internal Morphology

  16. The Insect Excretory System • Elimination of nitrogenous waste products • Regulation of water and ionic balance • The Malpighian Tubules Insects and People Internal Morphology

  17. The Insect Excretory System Insects and People Internal Morphology

  18. The Excretory System Insects and People Internal Morphology

  19. The Excretory System • Excretory product = amine group + hydrogen (from water) • Three products found in animals • Ammonia - easy to produce but toxic • Urea - not as easy to produce, not as toxic • Uric Acid - difficult to produce, not toxic Insects and People Internal Morphology

  20. Ammonia - Excretion in small insects in moist environments Insects and People Internal Morphology

  21. Urea - Most Vertebrates Insects and People Internal Morphology

  22. Uric Acid - Most Terrestrial Insects Insects and People Internal Morphology

  23. Malphigian Tubules Insects and People Internal Morphology

  24. The Insect Respiratory System • As all animals, insects need Oxygen • As all animals, insects need to rid themselves of Carbon Dioxide • Insects do not transport oxygen through the circulatory system! Insects and People Internal Morphology

  25. The Insect Respiratory SystemOption - small and moist Insects and People Internal Morphology

  26. The Insect Respiratory SystemTracheal System - Spiracles Insects and People Internal Morphology

  27. The Insect Respiratory SystemSpiracles Insects and People Internal Morphology

  28. The Insect Respiratory System Insects and People Internal Morphology

  29. The Insect Respiratory System Insects and People Internal Morphology

  30. The Insect Respiratory SystemAquatic Insects - Gills Insects and People Internal Morphology

  31. The Insect Respiratory SystemAquatic Insects - Spiracular Tube Insects and People Internal Morphology

  32. The Insect Respiratory SystemAquatic Insects - Plastrons Insects and People Internal Morphology

  33. The Insect Circulatory System • Not significantly involved in the movement of oxygen and carbon dioxide through body • Movement of “information” throughout the body • Important in storage, Insects and People Internal Morphology

  34. The Insect Circulatory System Insects and People Internal Morphology

  35. The Insect Circulatory System Insects and People Internal Morphology

  36. The Insect Circulatory System Insects and People Internal Morphology

  37. The Insect Circulatory System Insects and People Internal Morphology

  38. The Insect Circulatory System • Hemolymph = insect “blood” • Hemocytes • “blood” cells serving various functions • H2O (water) • Inorganic ions • Organic molecules Insects and People Internal Morphology

  39. Hemolymph Functions • Transport • Nutrients • Waste products • Hormones • Storage • Water • Ions • Hydraulic Function • Internal pressure Insects and People Internal Morphology

  40. Remember Insect Blood does not contain hemoglobin. It does not transport oxygen! Insects and People Internal Morphology

  41. Some Hemocyte Functions • Phagocytosis • Coagulation • Wound Healing • Encapsulation Insects and People Internal Morphology

  42. The Insect Nervous System Insects and People Internal Morphology

  43. The Central Nervous System Insects and People Internal Morphology

  44. The Central Nervous System Insects and People Internal Morphology

  45. The Peripheral Nervous System Insects and People Internal Morphology

  46. Neurons - Nerve Cells Insects and People Internal Morphology

  47. Neuron Types • Sensory • Associated with sensory structures • Motor • Associated with muscles and glands • Association • Witin CNS Insects and People Internal Morphology

  48. The Nervous System Insects and People Internal Morphology

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