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Skeleton (Background (long bones (anatomy (compact bone (spongy bones…
Skeleton
Background
long bones
anatomy
compact bone
spongy bones
trabeculae
bone marrow
red bone marrow
red blood cells
yellow bone marrow
stores fat
tibia
metacarpals
fibula
femur
humerus
radius
ulna
phalanges
bone growth
born with
cartilage
provides framework
osteoblasts
secrete
collagen
enzymes absorbed from blood
phosphate
calcium phosphate
crystallize on cartilage
forms bone matrix
other minerals
calcium
structure units
osteons
parallel to bone axis
lamellae
alternating pattern
central canals
house
nerves
blood vessels
lacunae
house
osteocytes
osteoclasts
bone breakers
osteoblasts
bone makers
bone remodeling
osteocytes
detect microscopic fractures
osteocytes send chemical signals
osteoclasts
go through resorption
osteoclasts go through
apoptosis
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epiphyseal plate
located on long bones
use
continuing growth in length
classification of fractures
fissured
incomplete longitudinal break
spiral
break due to twist
greenstick
bone completely broken and splintered
comminuted
bone is in pieces
incomplete
bone is not broken through
complete
bone is broken through
compound
broken ends penetrate skin
simple
broken ends
bone healing
formation of hematoma
formation of fibrocartilaginouse callus
formation of bony callus
remodeling
addition of compact bone
downstream
fracture description
proximal humerus
compound fracture
ripped through skin
comminuted fracture
shattered into pieces
distal humerus
simple fracture
broken bone
age of boy
12
healing
distal humerus
2-3 months
proximal humerus
6-12 months
boys diet
does not include enough calcium
boy needs to
consume products
with sufficient levels of calcium
upstream
low to calcium intake
bones don't grow as strong
prone to fracture