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Functions of Bones
Support, Protection, Movement, Mineral storage, Blood Cell Production, Energy Storage
Types of bones
Long bones: longer than wide. Short Bones: are cubelike. Flat Bones: thin or flattened such as ribs or skull bones. Irregular Bones: such as vertebrae, facial bones have specific shapes
Compact bone
One of two kinds of bone. The hard material that makes up the shaft of long bones and the outside surfaces of other bones.
Spongy bone
The second kind of bone. Consists of thin, irregularly shaped plates called trabeculae, arranged in latticework network.
Diaphysis
The long tubular portion of long bones. Composed of compact bone tissue.
Epiphysis
The expanded end of a long bone. Where red blood cells are formed.
Metaphysis
Area where diaphysis meets the epiphysis. Includes Epiphyseal line, a remnant of cartilage from growing bones.
Medullary Cavity
The open area within the diaphysis. The adipose tissue inside the cavity stores lipids and forms the yellow marrow.
Articular Cartilage
Covers the epiphysis where joints occur.
Periosteum
The membrane covering the outside of the diaphysis. It contains osteoblasts, osteoclasts, nerve fibers, and blood and lymphatic vessels.
Endosteum
The membrane that lines the marrow cavity.
Intramembranous Ossification
Fibrous membranes are replaced by bone tissue.
Endochondral Ossification
Second ossification process for bone development. Hyaline cartilage is replaced by bone tissue.