ANSC3103 Lecture Notes - Lecture 20: Ileum, Jejunum, Greater Omentum

• School: University of Sydney
• Department: Animal Science
• Course: ANSC3103
• Professor: peter white

Document Summary

Digestive system anatomy: what is digestion it is the transfer of nutrients, water and electrolytes from external to internal environment. Git in an animal provides clues to the animals diet and method of processing. Carnivores: they have stomach small intestines large intestines. Ruminants they have forestomach stomach small intestines large intestines. Single stomach herbivores have stomach small intestines large intestines. Incisor teeth tear and or scrape food while molars grind the food: carnivores use incisors to chew, herbivores, food needs more chewing and mashing, ruminants masticate cud. Stomach: function: it stores and mixes food, structure: mucosal or non mucosal, mucosal cells: mucous, partial, chief and enteroendocrine. Mucous prevents auto-digestion: pathway: cardia fundus/ body pyloric antrum pylorus. Small intestine: greater omentum : an apron like fold of visceral peritoneum that covers the intestines, function: enzymatic digestion and nutrient absorption, structure: components, duodenum- descending caudal flexure ascending. Jejunum fans from the roof of mesentery.