A popliteal cyst, also known as a Baker's cyst, is a fluid-filled swelling that causes a lump at the back of the knee.
the smallest category is species but from largest to smallest it will be: kingdom Phylum class order family genus and species and you can come up with another word for it to hâ¦elp you with it. so yeh there you go.
Worm Classification. Worms are in a very broad category that is not officially classified in any scientific sense. While most worms are limbless invertebrates, some worms are actually reptiles or amphibians.Many other animals called worms are simply insect larvae that have yet to metamorphose into their adult stage. Earthworms are also an unofficial broad classification of worms. 2  Hundreds of different worm species in 16 families are considered earthworms. 3  Earthworms are also divided into three subcategories depending on their ecosystem.