diaphysis
epiphyses
metaphyses
periosteum
medullary
cavity (marrow cavity)
endosteum
osteogenic
cells
osteoblasts
osteocytes
osteoclasts
compact
bone
spongy
bone
osteons
or Haversian systems
perforating
(Volkmann’s) canals
central
(Haversian) canals
lamellae
lacunae
canaliculi
trabeculae
ossification
or osteogenesis
intramembranous
ossification - describe or recognize description of how this occurs
endochondral
ossification - describe or recognize description of how this occurs
interstitial
growth – length – describe or recognize description of how this occurs
appositional
growth – thickness – describe or recognize description of how this occurs
primary
ossification center
secondary
ossification center
epiphyseal
plate
epiphyseal
line
bone
remodeling
bone
resorption
effects
of disuse and stress on bone mass
blood
calcium levels too high – cardiac arrest
blood
calcium levels too low – respiratory arrest
blood
calcium levels regulated by control of rate of resorption from bone & rate
of deposition into bone
decreasing
blood calcium levels result in increased parathyroid hormone (PTH) production
decreasing
blood calcium levels result in increased number and activity of osteoclasts
decreasing
blood calcium levels result in decreased urine calcium loss
calcitriol
promotes calcium absorption from GI tract
rising
blood calcium levels result in increased calcitonin production
calcitonin
accelerates calcium deposition