DAVID M. NUNAMAKER. The term osteomyelitis by definition implies inflammation of the bone and its marrow contents regardless of the cause. The purpose of this chapter is to describe osteomyelitis caused by known infectious agents. The two major classifications are bacterial osteomyelitis and fungal osteomyelitis. The study of bacterial osteomyelitis includes two distinct clinical forms of the disease.
Then you are a vertebrate, too! Vertebrates make up most of the animals that we are familiar with. Exceptions to this would be things like an insect, an octopus, a lobster or crab, a jellyfish, or a clam. Most everything else is a vertebrate, with a backbone and other bones. The five classes of vertebrates are listed below.
The vertebrates traditionally include the hagfish, which do not have proper vertebrae, though their closest living relatives, the lampreys, do. Hagfish do, however, possess a cranium. For this reason, the vertebrate subphylum is sometimes referred to as  Craniata  when discussing morphology.he central nervous system of vertebrates is based on a hollow nerve cord running along the length of the animal. Of particular importance and unique to vertebrates is the presence of neural crest cells.