01:119:116 Lecture Notes - Lecture 28: Osmotic Concentration, Aquaporin, Annelid

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Professor Beal

Document Summary

A. the rime of the ancient mariner: water, water, everywhere, / and all the boards did shrink; / water, water, everywhere, / B. functions of the excretory system: remove fluid from blood or interstitial tissue, osmoregulation and regulation of ions, excretion. A. osmosis (important: figure 44. 2: hypoosmotic- the more dilute solution, hyperosmotic- the solution with the higher concentration of solutes, isoosmotic- two solutions with the same osmolarity. C. aquatic vertebrates (important: figure 44. 4: marine fish, ocean is hyperosmotic, drink lots of water, excrete salts, freshwater fish, interstitial fluid is hyperosmotic, drink very little, excrete lots of dilute urine. D. terrestrial vertebrate: lack of water is the biggest problem, obtain water by, 1. ) Producing metabolic water: adaptations to reduce water loss, 1. ) A. proteins and nucleic acids: broken down -> energy or converted (fats, carbs), deamination- removing an amine (nh2) (liver), catabolic, this makes an ammonia -> toxic. A. four basic steps (important: figure 44. 8: 1. )