17 - bone

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1
bone cells
osteocytes
osteoblasts
osteoclasts
2
maintain bone matrix
osteocytes
3
build new bone form
osteoblasts
4
carve bone
osteoclasts
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process of bone formation (occurs in utero)
ossification
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osteoblast's role
build bone
after and OSTEOBLAST becomes surrounder by BONE MATRIX, it becomes an OSTEOCYTE
7
where bone formation begins
ossification center
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where bone 1st begins to appear, forms diaphyses
primary ossification center
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forms epiphyses
secondary ossification center
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in infancy and youth, long bones lengthen at _
epiphyseal plate
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in infancy and youth, long bones widen by adding more _
lamella
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in ending of bone growth in length, epiphyseal plate is replaced by an _
epiphyseal line
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removal of existing bone by osteoclasts and deposition of new bone by osteoblasts
bone remodeling
14
occurs in all bones, responsible for changes in bone shape, bone repair, adjustment of bone to stress, and calcium ion regulation
bone remodeling
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in bone repair, broken bone cause bleeding and a __ forms
blood clot
16
in bone repair, _ forms which is a fibrous network between 2 fragments
callus
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in bone repair, cartilage model forms first, then osteoblasts and osteoclasts enter the callus and will be replaced by bony callus for ___ after injury
4-6 weeks
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in bone repair, __ is slowly remodeled to form compact bone
bony callus
19
is a major storage site for calcium
bone
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movement of _ in and out of bone helps determine blood levels of calcium
calcium
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Calcium moves into bone as _ build new bone
osteoblasts
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Calcium moves out of bone as_ break down bone
osteoclasts
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calcium homeostasis is maintained by __ and _
parathyroid hormone and calcitonin
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tissue that makes blood cells
hematopoietic tissue
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location of blood-forming cells
red marrow
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mostly fat
yellow marrow
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location of hematopoietic tissue in newborns
most bones (red marrow)
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location of hematopoietic tissue in adults: red is replaced with __
yellow marrow
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location of hematopoietic tissue in adults: red marrow is mainly in ___
epiphyses of femur and humerus
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