4)growth of cartilage interstitial growth e inner chondrocyte proliferation produce fiber and matrix mmature cartilage appositional growth ● osteoprogenitor cell-cartilage cell (chondrocyte)-> produce fiber and matrix e growing and mature cartilage
4) growth of cartilage ---interstitial growth: inner chondrocyte proliferation→ produce fiber and matrix. immature cartilage ---appositional growth: osteoprogenitor cell→cartilage cell (chondrocyte) → produce fiber and matrix. growing and mature cartilage
2 Bone consists of bone tissue, periosteum and endosteum bone marrow
2.Bone ---consists of bone tissue, periosteum and endosteum, bone marrow
1) Bone tissue ① Cells
1) Bone tissue ① Cells:
a osteoprogenitor cell; stem cell structure ● fusiform.smal e ovoid nucleus e slight basophilic cytoplasm g exist in periosteum and endosteum function differentiated into osteoblas and chondrocyte
a. osteoprogenitor cell: stem cell ---structure: fusiform, small ovoid nucleus slight basophilic cytoplasm exist in periosteum and endosteum ---function: differentiated into osteoblast and chondrocyte