BIO 2135 Quiz: Nematoda Keywords
21 Oct 2015
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Acoelomate: triploblastic animals that do not have an internal body cavity. Although the term could be applied to other lower phyla, it is most accurately used with the triploblasts rather than diploblasts. nematodes are acoelomate. Mesodermal cells are packed and embedded in the intracellular mtrix, and fluid movements throught he matrix acts as a circulatory system. Amphid: 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 cilia. part of the nematode mouth; located at the base of the lips they appear to be modified cilia. But there is controversy because ecdysozoans are supposed to have lost all their cilia. Blastocoel: 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.
