ch 4 development of the face and neck dental anatomy

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Anonymous
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ch 4 development of the face and neck dental anatomy
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2011-09-22 21:46:57
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dental anatomy face neck cleft lip brachial grooves pouches archie
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face and neck development archie brachial grooves and pouches
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  1. 1a external
    frontonasal process gives rise to
    • upper face
    • forehead
    • nasal septum
  2. 1a external
    3 types of placodes
    thickened ectoderm that develops into sensory organs
    • lens placodes-future eyes/migrate medially
    • otic placodes-future ears
    • nasal placodes-future nose and olfactory cells
  3. 1a nasal placodes submerge and create ------------- which will later be the nasal cavity.
    nasal pits
  4. 1b external
    frontonasal process:
    medial nasal process gives rise to:
    • middle portion of the nose
    • intermaxillary segment:
    • maxillary incisors and primary palate
  5. 1c external
    frontonasal process:
    lateral nasal process gives rise to:
    ala of the nose
  6. 2a external
    maxillary process gives rise to:
    • mid face
    • sides of the upper lip
    • cheeks
    • secondary palate
    • posterior portion of maxilla with teeth
    • maxillary canines
    • zygomatic bone
    • portions of temporal bone
  7. 2a cleft lip is the failure of fusion between:
    ---------- and --------------. bilaterally
    maxillary process and medial nasal processes
  8. 2a what forms from the fusion of the maxillary processes and the lateral nasal processes
    and that gives rise to?
    • nasolacrimal groove
    • gives rise to: nasolacrimal duct
  9. 2b stomodeum and oral cavity formation
    (mandibular processes in book)
    what is a stomodeum. its sealed off by?
    • primitive mouth
    • oropharyngeal membrane
  10. 2b oropharyngeal membrane disintegrates and opens into? what week does this happen?
    • primitive pharynx
    • during the fourth week
  11. 3 external
    mandibular arch or first brachial arch gives rise to:
    • lower face
    • lower lip
    • mandible with teeth
    • trigeminal nerve V
    • muscles of mastication
    • temporomandibular ligaments
  12. 3a mandibular processes
    first to form after stomodeum
    what do the form -------. the fuse line is called ---------.
    fuse in middle to become the mandibular arch. fuse line is called mandibular symphysis
  13. 3 external mandibular arch:
    meckel's cartilage gives rise to:
    • malleus and incus
    • (middle ear bone)
  14. 4 external brachial groove
    gives rise to:
    eardrum
  15. 5 external hyoid arch or second brachial arch
    gives rise to:
    • muscles of facial expression
    • suprahyoid muscle
    • facial nerve VII
  16. 5 external hyoid arch: reichert's cartilage
    gives rise to:
    • stapes (middle ear bone)
    • styloid process
    • upper portion of hyoid bone
  17. 6 external third branchial arch
    gives rise to:
    • phargngeal muscle
    • lower portion of hyoid bone
  18. 7 external fourth/sixth branchial arch
    gives rise to
    muscles of larynx and pharynx
  19. 8 internal first pharyngeal pouch
    gives rise to:
    auditory tubes
  20. 9 internal second pharyngeal pouch
    gives rise to:
    palatine tonsils
  21. 10 internal third/fourth pharyngeal pouch
    gives rise to:
    • parathyroid gland
    • thymus gland

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