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26 terms

anatomy cartilage & bone

STUDY
PLAY
cartilage
Soft bone
flexible skeleton
shock absorber
reduce friction at movable joint surfaces
few cells large quantity of extracellular matrix
A-vascular
water most abundant substance of this material
chondrocytes
type of cell that makes cartilage
extracellular matrix in cartilage
when the cartilage is compressed, the water moves. this movement of water within the cartilage helps this tissue in joint lubrication.
types of cartilage
hyaline cartilage
fibrocartilage
elastic cartilage
Hyaline cartilage
reduces friction
shock absorber
glass like
Fibrocartilage
dense
strongest and most rigid
also shock absorber
also reduces friction
Elastic Cartilage
helps you hear
elastic
physical properties of bone tissue
Strength to resist tension
Strength to resist comression
osteoclast, osteoblast, osteocyte
Resopnsible for the remodeling of bone
Bone Cells
Are living entities of bone tissue. they have the capacity to both build bone tissue and break it down
Osteoblast
builds bone
'B'build = 'B'blast
Osteoclast
cuts away bone
'C'cuts = 'C' clast
Osteocyte
bone regulating or monitoring cell
Extra Cellular Matrix
organic components---
Collagen-gives bones tensile strength
inorganic components-
Bone salts or minerals
Hydorxyapatite- hard stuff of bone
Affords bone its compressive strength
relationship between inorganic and organic (extra cellular matrix)
too much collagen rubbery like
too much Hydroxyapatite, bone becomes too brittle
Compact Bone
appears a dense, solid bone to the unaided eye
Osteon
fundamental structual unit of compact bone
Spongy or Trabecualr bone
main structural feature of spongy bone is the trabecular.
always in interior of a bone beneath compact bone
delicate meshwork of interconnected plates or beams of bone
you can see the small spaces between the bone looks like a hardened sponge.
the spaces contain bone marrow, YELLOW and RED depending on locaton or age along with numerous blood vessels
spongy area helps lend strength to bone
trabecula (singular)
little beam
classification of bones
long bone
short bone
flat bone
irregualr bone
Periosteum
external bone covering-
dense irregular tissue
contains osteoclast, osteoblast & blood vessels
Articular cartilage
ball bearing like cushions movable joints
Diaphysis
shaft of bone
epiphysis
ends of bones
Medullary cavity
Hollow center--Yellow bone marow permeated by many blood vessels
Nutrient foraman
where blood comes into the bone