Chapter 40 Packet - Galbo 1 Kate Galbo Mr Megow AP Bio Set...

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Galbo 1 Kate Galbo Mr. Megow AP Bio Set 1 3 December 2010 Chapter 40: Basic Principles of Animal Form and Function Interactive Questions: 1. List some advantages of a compact, complex body form in which most of the body cells are not in contact with the external environment. Although exchange with the environment is a problem for animals that have internal cells, complex, compact forms have advantages. A specialized outer covering protects against predators; large muscles allow for rapid movement; and internal digestive organs break down food gradually, which in turn controls the release of stored energy. Because the environment for the cells is the internal body fluid, the animal’s organ systems can control the solution surrounding the cells. A complex body form is well suited to live on land because the external environment varies. 2. Name two types of epithelium illustrated below. One of these epithelial types lines the esophagus, and the other lines the digestive tract. Explain why each would be found in its location. a. This is an example of stratified squamous epithelium that lines the esophagus. The many layers serves as protection to the high volume of food, saliva and mucus. b. This is an example of simple columnar epithelium that lines the digestive tract. The layers secrete mucus, which helps the food move through the digestive tract and digestive juices. It also absorbs nutrients from the food. 3. Identify the types of connective tissue and their components in the following three micrographs. a. Osteon- a repeating unit with concentric layers of the mineralized matrix, which are deposited around a central canal b. Central Canal- contains blood vessels and nerves that service the bone c.
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