chapter 7 Flashcards
functions of skeleton (6)
support protection movement electrolyte balance acid-base balance blood formation
individual bones are made up of
bone tissue
marrow
cartilage
periosteum
yellow fat contained in
marrow cavity
osteocyte
when osteoblast is encased in tissue
organic vs inorganic
organic=collagen, gags (heated bone)
inorganic=hydroxappatite (vinegar)
pathologies of bone
rickets
brittle bone disease
rickets
soft bones; don’t lay enough hydroxyapatite
vinegar and chicken bones
brittle bone disease
protein deficiency
decrease in collagen
compact bone
lamellae haversion (central) canal canaliculi osteon resist tension and compression not all bone is laid down in osteons
lamellae
collagen fibers corkscrew down
opposite direction to provide strength
haversion central canal
volkman canals lined with endosteum
osteon
central canal and lamellae
spongy bone
sponge-like appearance lays down according to stress lines no central canals trabeculae distribute weight equally blood filled spaces, filled with RBM
osteon
basic structural unit
bone marrow:
soft tissue
red marrow-hematopoietic tissue
yellow marrow
gelatinous marrow of old age
soft tissue
medullary space of long bones
trabeculae
large central canals
red marrow-hematopoietic tissue
thick blood
hemopoietic: blood cell production
yellow marrow
fatty marrow of LONG bones in adults
gelatinous marrow of old age
yellow marrow replaced with reddish jelly
intramembranous bone formation
check screenshot;
flat bone development
endochondral ossification
- development of cartilage model
- primary ossification
- vascular invasion
- secondary marrow cavity
- formation of epiphyseal plate
- cartilage consumed
metaphysis
aka epiphyseal plate
age when epiphyseal closes
18-25
bone growth in width
appositional growth at bone’s surface
bone closest to central canal=newest bone
