they make the skull light in weight, help in the resonance of voice, and act as air conditioning chambers for the inspired air.ĭevelopmental Classification of Bones Membrane (Dermal) Bones Pneumatic bones examples are maxilla, sphenoid, ethmoid, etc. Pneumatic BonesĬertain irregular bones contain large air spaces lined by epithelium. Vertebra, hip bone, and bones in the base of the skull. Examples: bone in the vault of the skull, ribs, sternum, and scapula. Carpal and tarsal bones in the wrist and foot are examples of short bones.įlat bones resemble shallow plates and form boundaries of certain body cavities.

Their shape is usually cuboid, cuneiform, trapezoid, or scaphoid. Examples of typical long bones are humerus, radius, ulna, femur, tibia and fibula, metacarpals, metatarsals, and phalanges Humerus is a typical long bone Short bones

The shaft typically has 3 surfaces separated by 3 borders, a central medullary cavity, and a nutrient foramen directed away from the growing end. It is important to understand the terms used so that confusion does not arise.Ĭlassification of Bones According to Shape Long bonesĮach long bone has an elongated shaft or diaphysis and two expanded ends (epiphyses) which are smooth and articular. Classification of Bones Based on the Bone structureĬlassification of bones can be done in more than one way.Classification of Bones According to Shape.

Example of flat bones