To describe the pain endured by victims of emotional abuse with written words is like trying to explain what a person experiences when facing the realization of certain, impending death. It seems quite impossible. There are rips, tears, stabs and agonizing pain within her heart.
13. There are no respiratory organs and the worms breathe through its moist skin. The three classes of Annelids are: Oligochaeta (earthworms); Polychaeta (sand worms); Hirudinea (leeches). Leeches are parasitic and are used by the medical profession to withdraw blood from humans in certain situations.Source(s): ATP-Man Â· 9 years ago. Thumbs up. 5. Thumbs down. 0. 1 comment. Loading .... Bilateral symmetry. 3. True body cavity (coelom) is partitioned by structures called septa. 4. The organs of the digestive, nervous, and circulatory systems penetrate the septa and run the length of the body. 5.
Each segment has the same sets of organs and, in most polychaetes, has a pair of parapodia that many species use for locomotion. Septa separate the segments of many species, but are poorly defined or absent in others, and Echiura and Sipuncula show no obvious signs of segmentation.he burrowing of marine polychaetes, which may constitute up to a third of all species in near-shore environments, encourages the development of ecosystems by enabling water and oxygen to penetrate the sea floor. In addition to improving soil fertility, annelids serve humans as food and as bait.