Bone classification

To help us identify bones they have been classified according to their shape. There are five bone classifications that all bones come under.

Long Bones

A long bone is a bone that is longer than its width, such as the femur, humerus, ulna, radius, tibia, fibula, metacarpals, metatarsals, and phalanges.


Short Bones

A short bone is bone that is wider than its length, such as the carpals and tarsals.


Flat Bones

A flat bone is bone that has a flat surface i.e the cranium, sternum, pelvis and scapula.


Irregular Bones

An irregular bone is a bone that has an irregular shape i.e the bones of the vertebrae and face.



A sesamoid is a bone that is seed shaped i.e the patella.


Now see if you can match up the correct bone classification with the correct description.

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