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58 Cards in this Set

  • Front
  • Back
What are the cells that produce cartilage matrix?
chondroblasts
What are the cells that are surrounded by the matrix? What do they live in?
chondrocytes
lacunae
What are the three types of cartilage?
hyaline cartilage
fibrocartilage
elastic cartilage
What are the functions of caritlage?
Support soft tissue
articulation
precursor model for bone growth
What are the two patterns of cartilage growth? What does each mean?
interstitial - growth from within
appositional - growth along the outside edge
Which cartilage growth pattern involves chondroblasts?
appositional
Which cartilage growth pattern involves chondrocytes?
interstitial
What are the functions of bone?
support
protection
movement
hemopoiesis - blood cell formation
storage
What are the two types of bone CT?
compact (dense) bone
spongy (trabeculae) bone
What are the classifications of bones?
long bones
short bones
flat bones
irregular bones
What is term for the spongy bone inbetween layers of compact bone in flat boes?
diploe
What is the elongated, shaft of long bone called?
diaphysis
What are the enlarged knobby regions at the ends of long bones called?
epiphyses
What is the function of epiphyses?
strengthen joints
attachment for tendons and ligaments
What is between the diaphysis and epiphyses?
metaphysis
Another term for growth plate
epiphsial plate
What is articular cartilage, and what is it's purpose?
thin layer of hyaline cartilage on the epiphysis
reduce friction between articulating bones
What is the thin cartilage on the epiphysis made of and called?
hyaline cartilage
articular cartilage
What is the space in the diaphysis called
medullary/marrow cavity
Where is bone marrow contained?
medullary/marrow cavity
What are the two bone coverings called?
periosteum
endosteum
What covers the external surfaces of bone?
periosteum
What covers the internal surfaces of bone?
endosteum
What is the purpose of periosteum?
acts as anchor for blood vessels and nerves
What anchors periosteum to the bone matrix?
perforating fibers
-blasts
produce
-cyte
cell
____ are formed from osteoprogenitor cells.
osteoblasts
____ are formed from osteoblasts.
osteocytes
____ are stem cells derived from mesenchyme
osteprogenitor
____ cells are large multinucleate cells that dissolve bone. What does this process release?
osteoclasts
Ca++
____ of the bone matrix is organic components, while ____ is inorganic.
1/3
2/3
____ of the bone matrix is inorganic components, while ____ is organic.
2/3
1/3
What are the bone salt crystals called?
hydroxyapatite
What is the purpose of and what are hydroxyapitites made of?
compressional strength
calcium, phosphate, and hydroxide
Which component of bone matrix gives it it's tensile strength by resisting stretching and twisting, and what are the components?
organic
cells, collagen, ground substance
Which part of bones have the greatest compression and tension on them.
external surfaces
What are the cylindrical structures that run parallel to the shaft of a bone? What is the system called
osteon
Haversion
What are the canals of osteon?
central - down middle
perforating - perpendicular
canaliculi - between lacunae
What are the rings of bone around the central canal?
concentric lamellae
What is along the endostium and periostium?
circumferential lamallae
What are the pieces that aren't round within the osteum?
interstitial lamallae
What is the formation and development of bone?
ossification
What week of embrionic development soes ossification begin?
8th
What are the two patterns of ossification?
intramembranous
endochondral
What ossification pattern produces flat bones of the skull, some facial bones, the mandible, and central part of clavical?
intremembranous
What does endochondral ossification begins with?
hyaline cartilage
When is bone growth complete?
When the epiphysis plate ossifies and forms and epiphysis line
At what age does epiphysis plate ossification occer
10-25 years depending on the bone
Where does primary ossification occur?
diaphysis
Where does secondary ossification occur?
epiphysis
Growth in length is called____.
interstitial
Grwoth in width is called ____.
appostitial
Bone deposition involves what bone cell type?
osteoblasts
Bone resorption invovles what bone cell type?
osteoclasts
What are the three arteries and veins in bones and where are they located?
Nutrient - diaphysis
Epiphyseal - epiphysis plate
Metaphyseal - between epiphysis and diaphysis
What is osteoporosis?
when bone reabsorption outpaces bone deposition
What are the steps of bone repair?
A fracture hematoma forms
A fibrocartilaginous (soft) callus forms
A hard (bony) callus forms
The bone is remodeled