Short bones have approximately the same length and width, which gives them a cube-like appearance. There are 90 long bones in the adult skeleton, consisting mostly of the bones of the upper and lower extremities, as well as the clavicle bones: These bones are going to have a shaft made primarily of compact bone, and two bulky ends, which often contain spongy bone. These bones can vary in length (short or long), but the key characteristic is that they are longer than they are wide.
We also have two minor categories of bones: sesamoid bones and sutural bones.įirst, I’ll talk about the long bones, which is the most common type of bone.
We have four major categories: long bones, short bones, flat bones, irregular bones.
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