01:119:116 Lecture Notes - Lecture 28: Hemolymph, Reabsorption, Amine
23 Apr 2016
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Document Summary
Physiological systems of animals operate in a fluid environment. Extracellular fluid = outside cells interstitial fluid, lymph, blood plasma. Composition of fluids depends on balancing uptake and loss of h2o and solutes. Osmoregulation controls solute concentration and balances water gain and loss one of the functions of excretion. Collect fluid from blood or interstitial tissue. Regulation of water content humans die if lose >~12% of body water. Regulation of concentration and distribution of ions cell processes fail if too diluted or too concentrated. Excretion = removal of metabolic wastes from body different from non-metabolic wastes that are eliminated by large intestine. Co2 excreted by respiratory structures (lungs or gill) Nitrogenous wastes removed by excretory system. Based on balancing the uptake and loss of water and solutes. Mole = molecular weight of a substance expressed in grams. Osmole = takes into account the number of particles produced when a solute dissolves. Glucose dissolves to give just one type of particle.
