Presentation 04 - Bioenergetics And Digestion in Lower Forms
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The document discusses bioenergetics and digestion in organisms. It covers core concepts like nutritional requirements and metabolic rates providing clues to energy strategies. It describes the evolution of diverse feeding mechanisms and digestive systems adapted to different diets. The four main stages of food processing are outlined as ingestion, digestion, absorption, and elimination, which typically occur in specialized compartments along the digestive tract. Disorders of the human digestive system and achieving a healthful diet are also mentioned.
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Presentation 04 - Bioenergetics And Digestion in Lower Forms
- 1. Bioenergetics and Digestion
- 16. Feeding adaptations for ingestion
- 17. Comparison of vertebrate digestive systems
- 18. Mammalian digestion General plan ACCESSORY DIGESTIVE ORGANS Organs of the GI tract
- 19. Comparison of mammalian digestive systems (Diet plays an important role in the length and structure)
Editor's Notes
- gastrovascular
- Esophagus – no sphincter valve, two-way contraction of esophagus muscles Rumen and reticulum – low partition, intermix, main fermentation <synthesis of vitamins and proteins, breakdown of fibrous feeds> vat teeming with microorganisms (before exposing to gastric juices) Omasum – filter pump to sort food (absorption) Abomasum – true stomach (gastric juices)