Skeletal Definitions Flashcards
Medullary cavity
central cavity
Diploe
spongy layer of cranial bone
Canniliculi
narrow passages (that connect osteocytes to blood supply)
Periosteum
fibrous membrane surrounding bones (except at articular ends)
Osteoprogenitor cells
source of new osteoblasts
Ossification
the deposition of calcium salts in bone tissue
the process of replacing other tissue with bone
Osteon
functional unit of mature compact bone
Volkman’s canals
(perforating canals) run perpendicular to the surface of the bone
Red marrow
responsible
for blood cell formation
Yellow marrow
adipose
energy reserve
Calcification
the deposition of calcium salts during ossification
Epiphyseal plate
a disk of hyaline cartilage between the epiphysis and diaphysis
Growth plate
enables the bone to keep lengthening until full stature is attained
it is replaced by bone at maturity when the epiphysis fuses with the diaphysis
Membrane bones, a.k.a. dermal bones :
flat bones of the skull, lower jaw, and clavicle
Osteopenia
Inadequate ossification
