reduce friction at movable joint surfaces
few cells large quantity of extracellular matrix
water most abundant substance of this material
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
strongest and most rigid
also shock absorber
also reduces friction
helps you hear
physical properties of bone tissue
Strength to resist tension
Strength to resist comression
osteoclast, osteoblast, osteocyte
Resopnsible for the remodeling of bone
Are living entities of bone tissue. they have the capacity to both build bone tissue and break it down
'B'build = 'B'blast
cuts away bone
'C'cuts = 'C' clast
bone regulating or monitoring cell
Extra Cellular Matrix
Collagen-gives bones tensile strength
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
appears a dense, solid bone to the unaided eye
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
classification of bones
external bone covering-
dense irregular tissue
contains osteoclast, osteoblast & blood vessels
ball bearing like cushions movable joints
Hollow center--Yellow bone marow permeated by many blood vessels
where blood comes into the bone
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