A bone, such as the http://www.answers.com/topic/os-trigonum, not present in all people, that develops from a separate centre of ossification from the parent bone to which it may or may not be joined.
Following are some examples of bones along with short description: 1. Coccyx: a small triangular bone at the base of the spinal column.2. Cranium: Skull3. Femur: The bone in thigh.4. Fibula: Bone in...
There are five types of bones:Long Bones --- Femur is a good example.Short Bones -- Carpals.Irregular bones -- vertebrae.Flat bones -- The bones of the skull are a prime example.Sesamoid bones --...