compact bone
osteon
intramembranous
Cell which cause bone building
osteoblasts
Hormone which causes growth.
growth hormone
_________ determines "where" bone growth occurs.
Wolff's law
What is the type of ossification used to produce most bones in the skeleton?
endochondral ossification
When does endochondral ossification begin?
8 weeks (prenatal)
cells which cause bone resorption
osteoclasts
hormone which raises blood calcium levels
PTH
brittle weak bones; caused by calcium and vit. D deficiency
osteoporosis
Which structure allows for increase in length in childhood?
epiphyseal plate
Name the type of bone growth which causes bone to grow in width.
appositional
mitotically active stem cells
osteogenic cells
hormone which decreases blood calcium levels
calcitonin
weak, haphazard bone production
paget's disease
Name the shaft of a long bone.
diaphysis
Name the type of growth which causes bone to grow in length.
interstitial
Name the cells which monitor and maintain bone matrix.
osteocytes
osteomalacia in children (weak, soft bone)
rickets
Name the structure that forms hollow tubes of bone matrix to withstand stress and twisting.
lamellae
Which type of ossification produces stronger bone?
endochondral
Which cells are found in the periosteum and endosteum and help maintain matrix?
bone lining cells
produced by adipose tissue; inhibits osteoblasts
leptin
inflammation of the joint; joint space decrease causing bone rubbing on bone
arthritis