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The Skeletal System

The Skeletal System. Bone Classification. Long bones: arms Short bones: wrists Flat bones: scapula Irregular bones: vertebrae. Identify Bone Shapes!. Long Bones: Parts. Epiphysis: “knobby” ends of the long bones

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The Skeletal System

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  1. The Skeletal System

  2. Bone Classification • Long bones: arms • Short bones: wrists • Flat bones: scapula • Irregular bones: vertebrae

  3. Identify Bone Shapes!

  4. Long Bones: Parts • Epiphysis: “knobby” ends of the long bones • Articular cartilage: Outside portion of the epiphysis which provides smooth glide for joints • Diaphysis: The narrow, length section of a long bone • Periosteum: outermost covering of fibrous tissue on the bone

  5. Long Bones: Parts Cont. • Compact bone: section of the bone with no gaps which makes up the wall of the diaphysis • Spongy bone: section of the bone with thin layer of bone with gaps which makes up the epiphysis • Medullary cavity: hollow chamber in the middle of the diaphysis • Endosteum: lines the medullary cavity and houses the bone-forming cells • Marrow: connective tissue found in the gaps of bones.

  6. Intramembranous vs. Endochondral • Bones classified by the way they develop • Most bones are endochondral • Please look at page 198 in your book and crate a Venn Diagram to highlight the major differences between intramembranous bone development and endochondralbones

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