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49 Cards in this Set

  • Front
  • Back
Functions of skeletal system
Support Protection Movement
Storage Hemopoiesis
Types of bones
short long flat irregular
Diaphysis
shaft of long bone
medullary cavity
cavity inside diaphysis houses yellow bone marrow
epiphysis
ends of bone made up of spngy bone holds red bone marrow
articular cartilage
thin layer covering epiphysis acts as cushion
periosteum
membrane lining outside of diaphysis
endosteum
membrane lining inside of medullary cavity
Compact bone tissue
hard, dense outer layer
Osteons haversian systems
maultiple layers of calcified matrix compact bone is organized into
concentric lamella
single ring of haversian system, surround central canal contains blood vessel
central canal
hole in middle of osteon where blood vessel goes
osteocytes
bone cells appear as smaller black dots
lacunae
empty areas where osteocytes lie
canaliculi
connects lucunae to each other and to central canal
Spongy bone tissue
porous contains red bone marrow nad trabeculae
trabeculae
threadlike structures making spongy bone
cartilage
contains chondrocytes flexible fibrous gel matrix no blood vessels, difusion to obtain nutrients heals slowly
endochondral ossification
replacing cartilage with bone
osteoblasts
bone forming cells becoe osteocytes when calcified
osteoclasts
bone resorbing cells
osteosarcoma
tumor forms in bone tissue
Chondrosarcoma
tumor in cartilage
osteoporosis
excessive loss of calcified matrix
Paget disease
increased and irregular bone formation bones become largr and structurally abnormal
open fracture
broken bone sticks out of skin
closed fracture
fracture remains in skin
complete
complete break
incomplete
fracture or crack in bone
linear
break parallel to bone
Spongy bone tissue
porous contains red bone marrow nad trabeculae
trabeculae
threadlike structures making spongy bone
cartilage
contains chondrocytes flexible fibrous gel matrix no blood vessels, difusion to obtain nutrients heals slowly
endochondral ossification
replacing cartilage with bone
osteoblasts
bone forming cells becoe osteocytes when calcified
osteoclasts
bone resorbing cells
osteosarcoma
tumor forms in bone tissue
Chondrosarcoma
tumor in cartilage
osteoporosis
excessive loss of calcified matrix
Paget disease
increased and irregular bone formation bones become largr and structurally abnormal
open fracture
broken bone sticks out of skin
closed fracture
fracture remains in skin
complete
complete break
incomplete
fracture or crack in bone
linear
break parallel to bone
transverse
complete perpendicular to bone
oblique
spiral fracture
Rheumatoid Arthiritis
inflammation of synovial membrane and articular cartilage severe crippling due to genetics
Infectiuos Arthiritis
infection of joint tissues by pathogens ie lime disease