Skeletal System Flashcards
Functions of the skeletal system
support- provide structural framework
provide attachment for tendons and muscles
protection- protect vital organs
Assistance in movement- skeletal muscles attch to tendons and contract pulling on bone
mineral homeostasis- store minerals e.g calcium
blood cell production- in red bone marrow
tryglyceride storage- yellow bone marrow
structure of bone tissue
water
collagen fibre- flexibility
blood vessels
mineralised salts- hardness
extracellular matrix
osteocyte
mature bone cell
signalling communicate
osteoblast
synthesie matrix cell responsible for bone growth
osteoclast
breakdown bone- build strength for bone reabsorobing cell
bone tissue- organic
flexibility
bone tissue- inorganic
rigid
torsional stress- bending
increase bone tissue tightly packed- oteons
compact bone
compressive force
increase criscross pattern of trabecular
spongy allows force
divisions of skeleton
axial, appendicular
axial
longitude axis
exclude scapula, pelvis, clavicle (griddle)
appendicular
limbs
griddle- pelvis, scapula, clavicle
Bone Types
Long
short
seasamoid
irregular
flat bone
long bone
femur, fallanges
length longer then width
short bone
calcenius, carpals
length and width is the same