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Term Papers on Spiders
Spiders SPIDERS Michelle Reynolds Pope Science January 06, 1999 Outline Title Introduction: I. The first sub-topic A. Distinctive Characteristics 1. Detail of the external anatomy 2. Detail of the sensory organs B. Circulation and locomotion 1. Detail of the circulitary system 2. Detail of the respiratory system II. The second sub-topic A. Digestion, Venom, and Spider Silk 1. Detail of the digestive system 2. Details of venom and spider silk Conclusion: Spiders are a very special unique and complexed Arachnids Michelle Reynolds Ms. Pope Science January 06, 1999 SPIDERS The word spider came from an Old English verb spinnan. Spinnan means “to spin.” People in Eroupe see spiders with distaste, in African and in American cultures spiders are respected. Spiders are the most abundant and distinctive of all earthly predators. Most of the time they are not dangerous to us, spiders eat almost always insects and are found in places from the Tundras all the way to the low forrests They play abig job in taking care of the insect population, even the ones that can give us diseases. Distinctive Characteristics Even though insects and spiders belong to the group called, Arthopoda, they look so different from each other so they are put into different classes. The Insects and the Arachnids. Scientists think that these two classes split up thousands of years ago. External Anatomy Spiders come in different sizes, some of them are only 0.1 centimeter long,and some of the are more than 4 inches long. They have two body parts and eight legs. The spiders head and thorax are one body part. The thorax is the chest area of a spider. The abdomen or the stomache is the second body part Each leg has seven sections, and on the tips of many spiders legs are two tiny claws. Spiders that make a web use these claws and their notched hairs, to walk on their webs without sticking to them. Like insects, spiders have a body shell called an exoskeleton. This shell covers the body and the legs and keeps the spider from drying out. Much like our skin is to us. And to support the spider like our bones support us. Spiders even have a skelton inside called the internal skeleton. This is where the muscles attach. Unlike insects, spiders don’t have antennaes. They do have two ... This is ONLY a preview of the article. If you would like to view the entire document, you must subscribe to Digital Term Papers. Please register below now! Digital Term Papers has over 63,000 essays, term papers, and book notes online. Many paper sites will charge you hundreds of dollars for a single paper. Digital Term Papers only charges $14.95 for a one month membership with instant account activation! Don't waste anymore time! Join NOW!!!
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