Skeletal System Flashcards
(38 cards)
functions of skeletal system
- support and protect soft tissues
- provide points of attachment for muscles
- store inorganic salts(calcium)
- house blood-producing cells
tissues in bones
- bone tissue
- cartilage
- dense connective tissue
- blood and nervous tissue
four kinds of bones
long
flat
short
irregular
articulate
to form a joint
at end of long bone, forms a joint with another bone
epiphysis
coats the epiphysis with a layer of hyaline cartilage
articular cartilage
shaft of the bone
diaphysis
widening part of the bone between the diaphysis and the epiphysis
metaphysis
tough covering of dense connective tissue that covers the bone
-helps form/repair bone tissue
periosteum
tightly packed tissue, no gaps
compact bone
thin layers of compact bone, found in epiphysis(end of bone)
spongy bone
branching bony plates
trabeculae
semirigid tube with a hollow chamber
medulary cavity
how is the medullary cavity formed?
formed by compact bone in the diaphysis of a long bone
thin membrane containing bone forming cells
endosteum
soft connective tissue
marrow
projection at the point of attachment
process
extraceullular matrix composed of
collagen
inorganic salts
osteocytes
transports nutrients and wastes to nearby cells by passing through canaliculi
gives bone strength
function of collagen
make bone hard, make bone resistant to crushing
inorganic salts
central canal contains
blood vessels/ nerve fibers, surrounded by loose connective tissue
how do bones form
bone tissue replaces connective tissue
flat bones of the skull
intramembranous bones