The document summarizes the key functions and processes of the excretory system. It discusses homeostasis and how regulators and conformers respond to internal and external changes. It describes the four methods of heat exchange and how circulation aids in temperature regulation. It explains osmoregulation and the nitrogen waste products of different organisms. It provides details on the key functions of excretion including filtration, reabsorption, secretion and excretion that occur in the nephron. Feedback mechanisms that control water and salt balance are also summarized.

1. The Excretory System Ch. 44 By: Theresa Aller, Stephanie Byun, Rachel Erickson, Gi-youn Lee

43. The End