Comparitive gross anatomy of GIT systems in animals
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Created by:
hayleyshaw on April 25, 2012
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17 terms
Terms | Definitions |
|---|---|
 what is autoenzymic digestion? | carried out by enzymes in the GIT of animal |
| what is alloenzymic digestion? | carried out partly by gut microbres |
| what animals use autoenzymic digestion? | mammals and avian species |
| what animals use alloenzymic digestion? | foregut fermenters (ruminants/ non-ruminants) hindgut fermenters |
| dental adaptations of carnivores | canines for tearing molars for crushing bones |
| dental adaptations of omnivores | incisors and canines- piercing and tearing molars- grinding |
| dental adaptations of non-ruminant herbivores | incisors for nipping molars slightly angled, jaws move circularly |
| dental adaptations of ruminants | upper incisors absent (dental pad instead) canines absent lateral jaw movements molars present for shredding and grinding fibre |
| what is prehension? | grasping and conveying feed to mouth |
| what are edentates? | relatively toothless animals e.g sloths, armadillos, anteater tend to have long tongue may have ridges and spines in mouth |
| components of the digestive system of ruminants | rumen (1st stomach) reticulum (2nd stomach) omasum (3rd stomach) abomasum |
| what is the texture of the rumen? | towel like surface |
| what is the texture of the reticulum? | honey comb |
| what is the texture of the omasum? | book-like structure |
| list the three types of feeding strategies of ruminants | concentrate selectors, intermediate feeders and bulk roughage grazers |
| what are the features of concentrate selectors? | small rumen, poorly developed omasum large liver limited fibre digestion ability tree & shrub browsers |
| what are the features of intermediate feeders? | seasonally adaptive browsers grazers |
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