Varicose veins are large, raised, swollen blood vessels that twist and turn. They usually develop in the legs and can be seen through the skin. Spider veins are smaller, red, purple, and blue vessels that also twist and turn. Spider veins are easily visible through the skin, as well.
Common name: Flatworms. 1  Scientific name: many species. Phylum: Platyhelminthes. 2  Description: Although they are called Flatworms, these invertebrates are not flat. They are round-bodied with a flat belly. 3  Fun facts: A Flatworm has a single opening to its stomach, in the middle of its underside.
Confidence votes 77.8K. Depends on what kind of worm you are talking about. In general, a worm is an annelid (Phylum Annelida), and there are a lot of them. For just one example, the scientific name for an earthworm is Lumbricus terrestris.And that's just one of some 2,700 different types of earthworm. Links are provided below to connect you with the related Wikipedia articles.n general, a worm is an annelid (Phylum Annelida), and there are a lot of them. For just one example, the scientific name for an earthworm is Lumbricus terrestris. And that's just one of some 2,700 different types of earthworm. Links are provided below to connect you with the related Wikipedia articles.