ZOO 2090 Lecture Notes - Lecture 13: Abomasum, Duodenum, Proventriculus

• School: University of Guelph
• Department: Zoology
• Course: ZOO 2090
• Professor: Jinzhong Fu

Document Summary

The spaces for heart, lungs, digestive system and certain urogenital organs. Function: allows the organs to move and change sizes and positions. Lining of the coelom is a serous membrane that secretes lubricating fluid. The space between the splanchnic layer and somatic layer (splanchnocoel) develops into coelom. The coelom was first a simple straight space, and then partitioned along with evolution: the transverse septum separates the pericardial cavity from the pleuroperitoneal cavity, more partitions in mammals, pleural cavity lung. Store and discharge undigested waste: receive, store, break down (physically and chemically), and absorb food, vertebrates have a complete digestive tract from mouth to anus (or cloaca, component overview, digestive tract, mouth, pharynx. Intestine (small and large: cloaca or rectum, accessory organs and glands. In tetrapods, trend toward increased participation in physical and chemical aspects of digestion. In some mammals, allows digestion start (startch) marine reptiles and birds and function for salt excretion.