BISC 101 Lecture Notes - Lecture 12: Chondroitin Sulfate, Gastrovascular Cavity, Extracellular Fluid
13 Jul 2015
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Bisc 101 lecture 12 animal form & function. Anatomy: the study of the biological form of an organism. Physiology: the study of the biological functions an organism performs. Comparative study of animals reveals that form (anatomy) and function (physiology) are closely correlated: ex: long, tongue like proboscis of a hawkmoth is a structural adaptation for feeding on nectar within tube shaped flowers. Form and function are correlated at all levels of biological organization. Size and shape affect the way an animal interacts with its environment. Many different animal body plans have evolved and are determined by the genome or environment. Materials such a nutrients, waste products, and gases must be exchanged across the cell membranes of animal cells. Rate of exchange: proportional to a cell"s surface area. Amount of exchange material: proportional to a cell"s volume. In flat animals the distance between cells and the environment is minimized: flatworms and tapeworms.
