BIO2242 Lecture Notes - Lecture 11: Malpighian Tubule System, Teleost, Nephron
Document Summary
All animals produce waste products that must be removed from the body: Diffusion = solute on one side, and they move to the other side due to equilibrium. Hypotonic solution = net water movement will move into the rbc and will burst. Isotonic solution = net water movement is the same. Hypertonic solution = net water movement go leave the rbc and they will shrink. They have to balance water loss to water gain. Some animals are able to extract water from air = water vapor from air. Compared with a marine invertebrate, the body fluids of a freshwater invertebrate are: Get amino acids from ingested proteins or cellular proteins. Uric acid is even less toxic but not very soluble. Fish are on the constant risk of drying out. It is constantly getting water and salt in, which they need to get rid of. They do this by the gills (main exchange). They also need to get rid of magnesium.
