Unit 5 - Maintenance and Movement Study GuideUnit objectives:1.Describe embryonic origin of alimentary canal divisions. 2.Draw and label generalized alimentary canal and describe function of each component. 3.Draw and label generalized insect circulatory system and describe circulation pattern. 4.Describe the tracheal system of insects and define trachea, tracheoles, and taenidia. 5.Describe how insects maintain proper body temperature and how they keep from freezing. IntroductionAlimentary CanalFill out the functions for the digestive structures. Table 1 StructureFunctionpreoral cavity pharynx esophagus salivary gland crop proventriculus midgut gastric caeca Malphigian tubules* peritrophic membrane ileum colon rectum anus
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