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Compatative anatomy
bone
Question | Answer |
---|---|
connective tissue consists of what? | cartilage and bone |
cartilage | chondrocytes in lacunae,matrix(elastic and collagen fibers),supplied by diffusion(slows healing process)(hyaline(hip and knee),elastic(ear),fibrocartilage(inner vert disks),calcified(sharks)) |
bone | osteocytes in lacunae,matrix(calcium phosphate),supplied by bloodstream via central canal.bone is only found in vert b/c previously used calcium carbionate reacts with warm acidic places therefore bone had to be made from something else. |
bone development consists of | endochondral bone and intramembranous bone |
endochondral bone | starts as cartilage, also called replacement bone fish,amphibians,reptiles-keep growing while mammals and birds stop growing |
intramembranous bone | forms directly as bone(no cartilage intermediate),often dermal,often flat(ribs) |