BSC-2010 Chapter Notes - Chapter 40: Red Blood Cell, Animal Boy, Internal Control
2 Dec 2016
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Because form and function are correlated, examining anatomy often provides clues to physiology biological function. Concept 40. 1 - animal from and function are correlated at all levels of organization. Physical laws that govern strength, di usion, movement, and heat exchange limit the range of animal forms. Water is much more dense than air, and therefore, any bump on an animal"s body impedes it"s ability to swim fast. Penguins, sharks, seals, and tuna all have a shape that is fusiform, meaning tapered on both ends, and this helps them swim faster. Animals must exchange nutrients, waste products, and gases with their environment. The rate of exchange is proportional to membrane surface area involved in exchange, whereas the amount of material that must be exchanges is proportional to body volume. A multicellular organization therefore works only if every cells has access to a suitable aqueous environment, either inside or outside of the animal"s body.
