support, protect, move
form joints

form embryo skeleton

1. chondroblasts: make cartilage, in perichondrium

2. chondrocytes, w/in cartilage

collagen fibers

ground substance (complex sugar+proteins)

one type: elastic fibers

hyaline

elastic

fibrocartilage

common

costal cartilage (rib), nose, trachea, larynx, articular cartilage

in symphyses (bones growing together)

joint cushion (knee, jaw)

type of hyaline found in synovial joints

no perichondrium

strengthen tendon/ligament attachmens

form symphyses

form menisci of knee

support, protect, move

store minerals

osteoblast (make bone cells)

osteocyte (maintain bone cells)

osteoasts (destroy bone cells)

fibers,

collagen (spirals and layers), ground substance, proteoglycan complexes, specific osteoid proteins

bind minerals: hydroxyapatite crystals (Ca²⁺ and PO₄)

citrate, fluoride, strontium

vascular

remodeling: aging, stress

healing: regeneration

intramembranous: on connective tissue membrane (head)

endochondral: bone replaces "prototype" (chondro=cartilage)

young: woven

mature (1 yr): lamellar (layered)

outer: compact bone

inner: spongy bone

inner cavity: marrow cavity (make blood/fat)

for attaching ligament, etc[image]

length≈width

hands/feet

biggest in knee cap (patella)

[image]