Bone structure

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Bone structure

  1. 1. Construct Interactive Notes • 7pages binder paper On cover, write • Chapter 5: Skeletal System • Name, period, seat # • Color Picture
  2. 2. Bone Structure (pg 2)
  3. 3. Functions of the Bones 1. Support: Form internal framework that supports the body
  4. 4. Functions of the Bones 1. Support: Form internal framework that supports the body 2. Protection: Protects organs
  5. 5. Functions of the Bones 1. Support: Form internal framework that supports the body 2. Protection: Protects organs 3. Movement: Skeletal muscles use bones as levers
  6. 6. Functions of the Bones 1. Support: Form internal framework that supports the body 2. Protection: Protects organs 3. Movement: Skeletal muscles use bones as levers 4. Storage: Marrow stores fat. Bone tissue stores calcium and phosphorus
  7. 7. Functions of the Bones 1. Support: Form internal framework that supports the body 2. Protection: Protects organs 3. Movement: Skeletal muscles use bones as levers 4. Storage: Marrow stores fat. Bone tissue stores calcium and phosphorus 5. Blood cell formation: Occurs in bone marrow
  8. 8. Bone Tissue • Compact Bone: Contains haversiancanals that carry blood vessels surrounded by concentric rings of matrix that contains osteocytes in lacunae
  9. 9. Bone Tissue • Compact Bone: Contains haversiancanals that carry blood vessels surrounded by concentric rings of matrix that contains osteocytes in lacunae • Spongy Bone: Less dense than compact bone. Contains thin columns of bone tissue surrounded by small, irregular cavities. The cavities are filled with red bone marrow, which forms red and white blood cells.
  10. 10. Bone Shapes Shape Description Example Long Longer than it is wide Femur Short Approximately cube shaped Carpals Flat Thin, usually curved Skull and ribs Irregular Do not fit any of the categories above Vertebrae
  11. 11. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone
  12. 12. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone 2. Epiphyses: Enlarged ends of the bone. Thin layer of compact bone filled with spongy bone
  13. 13. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone 2. Epiphyses: Enlarged ends of the bone. Thin layer of compact bone filled with spongy bone 3. Articularcartilage: Thin layer of hyaline cartilage covering the epiphysis. Reduces friction at joints
  14. 14. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone 2. Epiphyses: Enlarged ends of the bone. Thin layer of compact bone filled with spongy bone 3. Articularcartilage: Thin layer of hyaline cartilage covering the epiphysis. Reduces friction at joints 4. Periosteum: Tough sheath of connective tissue that surrounds the bone
  15. 15. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone 2. Epiphyses: Enlarged ends of the bone. Thin layer of compact bone filled with spongy bone 3. Articularcartilage: Thin layer of hyaline cartilage covering the epiphysis. Reduces friction at joints 4. Periosteum: Tough sheath of connective tissue that surrounds the bone 5. Medullary cavity: hollow space within the diaphysis that contains fatty yellow bone marrow
  16. 16. Parts of a long bone 1. Diaphysis: cylindrical main portion of a bone. Made of compact bone 2. Epiphyses: Enlarged ends of the bone. Thin layer of compact bone filled with spongy bone 3. Articular cartilage: Thin layer of hyaline cartilage covering the epiphysis. Reduces friction at joints 4. Periosteum: Tough sheath of connective tissue that surrounds the bone 5. Medullary cavity: hollow space within the diaphysis that contains fatty yellow bone marrow 6. Endosteum: thin membrane that lines the medullary cavity
  17. 17. Bone markings • Head: Enlarged, rounded end of bone for articulation
  18. 18. Bone markings • Head: Enlarged, rounded end of bone for articulation • Condyle: Smooth, rounded articular surface
  19. 19. Bone markings • Head: Enlarged, rounded end of bone for articulation • Condyle: Smooth, rounded articular surface • Epicondyle: Bulge above a condyle for muscle attachment
  20. 20. Bone markings • Head: Enlarged, rounded end of bone for articulation • Condyle: Smooth, rounded articular surface • Epicondyle: Bulge above a condyle for muscle attachment • Trochanter: Large, blunt projection for muscle attachment
  21. 21. Bone markings • Head: Enlarged, rounded end of bone for articulation • Condyle: Smooth, rounded articular surface • Epicondyle: Bulge above a condyle for muscle attachment • Trochanter: Large, blunt projection for muscle attachment • Foramen: Hole in a bone for passage of blood vessels and nerves

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