BIO310H5 Lecture Notes - Lecture 9: Proximal Tubule, Afferent Arterioles, Distal Convoluted Tubule
Document Summary
Osmoconformers are animals that doesn"t actively control osmotic condition of its body fluids and instead conforms to the osmolarity of the surrounding medium. Osmoregulator are animals that maintain an internal osmolarity different from the medium in which they are immersed. Osmotic exchange that takes place between the animal and the environment can be divided in. Obligatory: are the osmotic exchange that can"t be controlled and it consist of two: transepithelial diffusion, ingestion, defecation, metabolic water production physiologically controlled activities that helps maintain homeostasis. Controlled: exchange includes active epithelial transport which consist of. Higher the surface to volume ratio, the easier it is for that organism to become dehydrated. Surface to volume ratio is greater in smaller animals. Permeability through integument (through the skin) gases and water by passive diffusion humidity due to water loss. Water can be lost via respiration and exercise. Frogs eggs are depleted from aquaporin to prevent egg from being burst.
