internal bone structure and ossification(bone development)

what is a Compact Bone

Strong, dense outer layer of bone protecting internal component

what is spongy (cancellous) bone

inner less dense layer containing speculated network called trabeculae

medullary cavity

Central cylindrical Canal, running down the shaft of long bones; housing yellow marrow( Fat storage)

periosteum

Tough, fibrous membrane Cover covering all outer bone surfaces(Except articular cartilage ends)

endosteum

tissue membrane lining the inner medullary cavity

nutrient Foramen

Opening your center of bone where blood vessels and nerves enter/exit

Red marrow

located in spongy bone in; produces red and white blood cells

What is trabeculae

interspaces filled with red and yellow marrow within the spongy bone

intramembranous Ossification

occurs an embryo to form flat bones. Bones joint at sutures.

Endochondral ossification

form short, regular, and long bones from hyaline cartilage models

Endochondral Occurs from two centers

primary and secondary ossification center

primary ossification center

begins before birth, forming the central shaft(Diaphysis)

secondary ossification center

accuses after birth at the end of long bones(epiphyses)

epiphyseal plate

cartilage plate between diaphysis and epiphysis for growth(visible radiographically)

what is Epiphyseal line?

The line left after full bone grow/ossification is complete( ossification complete ~21 Years of age)