BIOL110 Lecture Notes - Lecture 15: Helminthology, Gastrulation, Flatworm
9 Dec 2016
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Round worm: has a cuticle that needs to be moulted, like the arthropods. Helminthology: study of flatworms and unsegmented round worms (platyhelminthes and?) Rely on host organism to survive through their life cycles. We can also use them to kill pests. Does(cid:374)"t kill the(cid:373) (cid:271)ut redu(cid:272)es their a(cid:271)ility to do (cid:449)ork. **share lots of characteristics with arthropods free-living species will not be able to infect things lack circular muscles, only longitudinal just whips back and forth, helps with moving through particles or a bloodstream, but not for swimming. C. elegens, famous for modelling wider diversity of animals. Important in breaking down organic matter (decomposers), recycling nutrients in marine environment, compost *** Hookworms bite on intestinal lining and sucks up the blood. Mouth on one end and anus on the other. High internal pressure, helps with releasing eggs or waste, all they have to do is relax muscles and pressure pushes out of animal.
