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skeletal system pt2

ms.russell p-4

simple fracture clean break
compound fracture bone penetrating thru skin
comminuted fracture(elderly bones r brittle) bone breaks into many fragments.(treatment-open reduction)
greenstick fracture(children) incomplete break/bone is chipped
compression bone is crushed into a million pieces(more pourous bones-head injuries
depressed broken bones caves unwards(skull)
impacted joints-2 bones r crushed 2gether(most common-shoulder)
spiral twisted break; jagged-sport injuries
fracture break in bone
closed reduction treatment that is coazed by hand(less serious)
open reduction treatment that is done by surgery(complicated breaks)
steps in fracture repair 4
1st step in fracture repair hematoma formation
2nd step in bone repair fibrocartilage callus is formed(gandulation tissue or scar tissue forms *new capillaries*macrophages-phagocytosis*fibroblasts-collagen fibers*cartilage+bone matrix
3rd step in bone repair bony callous formation(spongy bone) formed by osteoblasts/clasts flood the area... convert tissue in2 songy bone
4th step in bone repair bone remodeling thru normal stress(movement) spongy bone->compact/osteoblasts/clasts
1st purpose of bone markings depression/openings->allows blood vessels+nerve fibers to pass
foramer an opening thru a bone(round or oval)
fossa shallow depression in a bone often serving as an articular surface
sinus a cavity(empty space) w/i a bone
2nd purpose of bone markings sites of tendon, muscle, ligament attachment
tuberosity large,roughned process
crest prominent ridge on bone process
trochanter femur-large blunt, irregular shaped process
3rd purpose of bone markings help form joints*head-bony expansion on a mere narrow neck(expanded at end of epiphyses*condyle-rounded projection
bone remodeling occurs in response to 3 factors..... 1-calcium levels in the blood 2-stress 3-injuries
remodeling process by which the organic and mineral components of the bone matrix are continously being recycled n renewed
calcitonin a hormone released by thyroid gland to decrease calcium levels if calcium levels increase
Created by: queenbee06