permanent condrocytes: articular cartilage

mature anlage chondrocytes

• temporary chondrocytes - within bone anlage

• permanent chondrocytes - ends of the gaps

  • produce articular cartilage in synovial joints

permanent chondrocytes: synovial joints

1. articular cartilage

2. synovial membrane- synovial fluid

3. fibrous joint capsule/membrane

4. bone

articular cartilage and synovial membrane make up

frictionless movement

articular cartilage is a …

sheet of hyaline cartilage at ends of bones forming joing

articular cartilage reduces…

frication between bone ends and absorbs compression pressure

main components of articular cartilage

• fixed cells = chondrocytes → produce ECM

• ECM

  • fibers = collagen

  • ground substance = proteoglycans, water

articular cartilage has NO

vascular system

• relies on diffusion of nutrition and wastes into synovial fluid

uncalcified region in articular cartilage

separated into zones based on:

1. shape and direction of chondrocytes

2. direction of fibers

3. superficial/zone 1 adjacent to synovial cluid

calcified region is

the deepest part

articular cartilage growth

proliferative chondrocytes within zone 1 and 3

zone 1

enable cartilage to grow laterally

zone 3

enable cartilage to grow thicker