EEB204H1 Final: EEB204H1 - Study Notes 3.docx
15 May 2014
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Which anatomical features mark branch points on the animal. Include the vertebrate animals and also a few groups of invertebrates. Ectoparasites live outside the host, usually with limbs or mouthparts for: types of what they eat piercing and sucking such as lice tapeworm. Endoparasites live inside the host, usually simple wormlike body such as. Support for the body and an attachment site for muscles: pharyngeal gill slits are located in the pharynx. Others appear as grooves during an early stage of development: the post-anal tail is a posterior extension of the body. Extends past the anus and contains muscle tissue and the rearmost portion of the nerve cord. During our embryonic phase, we lose our notochord, our gill slits, and our tails. Includes immobile, filter-feeding, vase-shaped animals known as sea squirts. Water enters the body through an incurrent siphon, passes into the pharynx at its top, an excurrent siphon. Food particles are trapped in mucous lining.
