Ch 6.5 Types of Ossification

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Across
  1. 1. _______ zone, matrix calcifies; cartilage cells die;blood vessels invade cavity.
  2. 4. Hyaline cartilage remains here when occification is completed
  3. 5. This forms in stage 3 of (Intra) occification.
  4. 8. In stage 2 of (Endo) ossification this calcifies in the center.
  5. 10. _______ happens at about age 18 in females, 21 in males.
  6. 12. _______ zone, new bone forms
  7. 15. _________ ossification-a bone (the skull) develops from a fibrous membrane.
  8. 16. In stage 4 of (intra) occification this replaces the bone formed in stage 3.
  9. 17. Begins in the 8th week of development.
  10. 19. These cells develop into many important organ systems.
  11. 20. _______ occify in stage 5 of (Endo) occification.
Down
  1. 2. In stage 1 of (Intra) occification theses appear in the fibrous connective tissue membrane.
  2. 3. _______ zone, cartilage cells undergo mitosis.
  3. 6. this bone growth lasts until early adulthood.
  4. 7. In stage 3 of (Endo)occification this invades the internal cavities and spongy bone forms as a result
  5. 9. Forms around the diaphysis of the hyaline cartilage in stage 1 of (Endo) ossification.
  6. 10. _________ ossification-bone develops by replacing hyaline cartilage (below the skull).
  7. 11. In stage 2 of (Intra) occification this is secreted within the fibrous membrane and calcifies.
  8. 13. _______ zone, older cartilage cells enlarge.
  9. 14. an embryonic connective tissue.
  10. 18. _______ zone, cartilage is relatively inactive.