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Midterm

Terms Midterm 2.docx

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Department
Biology
Course
BIO2135
Professor
All Professors
Semester
Winter

Description
Abductor muscle A muscle that moves any part of the body away from the central midline In brachiopods it opens the bivalve shell L abducere to lead awayAciculum Support structure in notopodium and neuropodium of some polychaetesAcoelomate Triploblastic animals that do not have an internal body cavity This includes the flatworms and ribbon worms Although the term could be applied to other lower phyla it is most accurately used with the triploblasts rather than diploblasts Gr a notkoilos hollowAdaptive radiation Evolution of a variety of different species from a single common ancestor Each is adapted for a particular niche and the appearance of the descendants may vary considerably from each other and the ancestorAdductor muscle A muscle that moves part of the body toward the central midline In brachiopods and bivalves it closes the bivalve shell Ladducere to draw towardAlbumin gland Produces albumin which is any class of large simple protein that is important constituents of vertebrate blood plasma and tissues fluids and also present in milk whites of eggs and other animal substances Alphachitin A complex carbohydrate composed of linearly arranged Nacetylglucosamine units Chitin is a characteristic of the cell wall of fungi and the outer cuticle of arthropods Gr chiton mantleAmphid Unique to the nematodes paired sensory structure located on each side of the head An external pore leads to an inner chamber and the sensory receptor formed from modified ciliaAnnelidaAortic archesAtrium One of the chambers of the heart Also the large cavity containing the pharynx in the tunicates and cephalochordatesBetachitin A complex carbohydrate composed of linearly arranged Nacetylglucosamine units Chitin is a characteristic of the cell wall of fungi and the outer cuticle of arthropods Gr chiton mantleBioluminescence How living organisms produce light Many organisms that live in the deep dark of the oceans or in other environments at night use flashing lights bioluminescence to communicate Gr bios lifeL lumen lightBlastocoel During the development of the embryo single cells divide and form a hollow ball of cells one cell layer thick The cavity inside this hollow ball is the blastocoel Gr blastos germ or shootkoilos hollowBranchial heart Modification of the circulatory system to form secondary hearts that pump blood into the gills Gr branchia gillsCalciferous glandsCecum A blind pouch at the beginning of the large intestineChloragogen tissue Group of modified peritoneal cells greenish clustered around the digestive tract of certain annelids aid in the transportation of food and the elimination of nitrogenous wasteCiliated sorting field Ciliated ventral footClitellum Special fused metameres in oligocheates and leeches that secrete mucous during mating L clitellae back or saddle
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