Bone Physiology Flashcards
functions of skeletal
structure(gives you shape), hematopoies (makes blood cells), protection and storage of calcium
periosteum
outer covering of bone, highly vascular with nerve supply
tendon
muscle to bone
ligament
bone to bone
endosteum
tough membrane that lines medullary cavity, contains osteoblasts
foramen
where the nerves and blood vessels enter bone
epiphyses
ends of bone, spongy bone
diaphysis
shaft of bone, compact bone
red marrow function
blood cell manufacture
yellow marrow funtion
fat storage
haversian canal
dark circles, access points for nutrients
lacunae
little caves where osteocytes are found
canaliculi
air tunnels that connect lacunae
transcytosis
passes nutrients on to lacunaes
lamellae
rings, matrix
haversian
runs length of long bone (think shape of letter H)
volkman
branch from haversian to deliver throughout bones (think shape of letter V)
hydroxyapatite
salt crystals, main component of matrix
osteoblasts function
builders
osteoclasts funtion
wreckers, secrete acid that dissovles calcium phosphate compounds
osteocytes funtion
maintenance workers
endochondrial definition and process
growth in length at epiphyseal plate
- hyaline cartilage forms model
- cells blow up like a balloon, pressure on matrix
- matrix crumbles, cells die, periosteum forms
- blood vessels and osteoblasts invade and bone disintegrates
- osteoblasts build spongy bone
- osteoblasts turn into osteocytes
- compact bone into periosteum
reserve cartilage
resting chodrocytes
proliferation
newly dividing chondrocytes
