BIOL10003 Lecture Notes - Lecture 9: Sexual Reproduction, Hermaphrodite, List Of White Collar Characters
14 Aug 2018
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Stages of their lifecycles allow parasites to enter our body. Via fingers or the air into mouth nose, eyes, ears. Burrow into our skin from the ground. Via intermediate host/vector e. g. louse, tick, mozzie, undercooked meat. Burrow into skin, then go into blood stream, to the lungs, into alveoli, up trachea and then swallowed into gut. If we are the i(cid:374)ter(cid:373)ediate host we"re usually alright as lo(cid:374)g as the adult wor(cid:373) is i(cid:374) our gut. But if the adult worm is in our mouth, oncospheres (a tapeworm embryo that has six hooks and is the earliest differentiated stage of a cyclophyllidean tapeworm) develop in our muscles. Or if the eggs are in our mouth, hydatid cysts (a cyst containing watery fluid, in particular one formed by and containing a tapeworm larva) develop in the liver/other organs. Many copies, genetically variable - used by most parasites. Avoid recognition e. g. schistosoma in mouse ---> monkey.
