anatomy cartilage & bone

26 terms by vchristoffel 

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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

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