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.
Because of this fluid, annelids have a firmness similar to that of water balloons. In addition, muscles in the outer tube give the annelid the ability to move, with an epidermis serving as a protective covering. Classes and Examples of Annelids. There are three classes within phylum Annelida. First, we will take a look at Oligochaeta, the class containing the ever-popular earthworm (as well as many aquatic worms). Earthworms are often used in dissection labs to observe and analyze body parts of animals in this phylum.