A
bone is a
rigid organ that constitutes part of the
vertebral skeleton. Bones support and protect the various organs of the body, produce
red and
white blood cells, store
minerals and also enable mobility.
Bone tissue is a type of dense
connective tissue. Bones come in a variety of shapes and sizes and have a complex internal and external
structure. They are lightweight yet strong and hard, and serve multiple
functions.
Mineralized osseous tissue, or
bone tissue, is of two types,
cortical and
cancellous, and gives a bone rigidity and a
coral-like three-dimensional internal structure. Other types of tissue found in bones include
marrow,
endosteum,
periosteum,
nerves,
blood vessels and
cartilage.