Chp 5 Development of Orofacial structures

  1. The palate begins development in the ____ week and is completed during the  ____week
    5th and 12th
  2. What palate is for formed in what three stages
    • the formation of the primary palate
    •  the secondary palate and
    • the completion of the palate
  3. During the 5th week the intermaxillary segment (premaxilla, primary palate) form from the fusion of _______ processes
    2 medial nasal
  4. Formation of the _____ completes the first stage of palate development
    primary palate
  5. During the 6th week of prenatal development, the bilateral maxillary processes give rise to
    two palatal shelves, or lateral palatine processes
  6. In the 8th week the tongue
    descends so the palatal shelves can fuse
  7. The two palatal shelves elongate and move toward each other
    to form the secondary palate
  8. The secondary palate will give rise to
    • posterior 2/3 of the hard palate
    • soft palate
    • uvula
  9. The formation of the ______ completes the second stage of palate formation
    secondary palate
  10. The complete the palate what must fuse together
    The secondary palate and the premaxilla
  11. A cleft palate can be detected in what weeks
    Between the 7th and 12th week
  12. The nasal and oral cavity become completely separate when
    the vertical nasal septum and the final palate fuse
  13. The nasal septum is a growth from
    the fused medial nasal processes
  14. The tongue develops during the
    4th to 8th weeks
  15. The tongue is formed by the ______ branchial arch
    first four
  16. The body of the tongue develops from the ______ branchial arch
  17. The base of the tongue develops from the ______ branchial arch
    2nd, 3rd and 4th
  18. The tongue begins to develop as a triangular swelling called the
    tuberculum impar
  19. What develops on each side of the tuberculum impar
    two oval lateral lingual swellings
  20. The median lingual sulcus marks
    the line of fusion of the 2 lateral lingual swellings
  21. The copula is formed from the fusion of
    mesenchyme of the 3rd and 4th branchial arches
  22. Posterior to the 2 fused lateral swellings are a pair of swellings called
  23. The copula gradually overgrows the ______ to form the ______
    2nd branchial arch/ Base of the tongue
  24. Posterior to the swellings of the copula is a 3rd median swelling called
    the epiglottic swelling
  25. The epiglottic swelling develops from the
    mesenchyme of the 4th branchial arches
  26. The epiglottic swelling marks the development of
    the most posterior part of the tongue and the future epiglottis
  27. ankyloglossia
    short lingual frenum
  28. The muscles of the tongue develop from
    mesoderm of the somites
  29. The muscles of the tongue are innervated by the
    12th cranial nerve, the hypoglossal nerve
  30. The foramen cecum is the beginning of the
    thyroglossal duct
  31. The ____ merges with the ______ to form the tongue
    copula/ lateral lingual swellings
Card Set
Chp 5 Development of Orofacial structures
Chp 5 Development of Orofacial structures