Embryology Multiple Choice Set 1


The primary cuticle is the last secreted product of the ameloblasts because it is calcified.
  1. Both statement and reason are correct and related
  2. Both statement and reason are correct but NOT related
  3. The statement is correct but the reason is NOT
  4. The statement is NOT correct but the reason is an accurate statement
  5. NEITHER statement nor reason is correct


In order for cementum to be deposited during tooth development:
  1. Principal fibers must be present
  2. The continuity of Hertwig's sheath must be broken
  3. The tooth must be erupting
  4. A periosteal bud must appear
  5. Alveolar bone must be deposited


In the human embryo, during the fourth week of development, the first branchial arch divides to form the:
  1. Median and lateral nasal processes
  2. Frontonasal and median nasal processes
  3. Branchial pouch
  4. Second and third branchial arches
  5. Mandibular and maxillary processes


The portion of the hard palate located directly posterior to the maxillary central and lateral incisors is derived from the:
  1. Lateral palatine processes
  2. Second branchial arch
  3. Median nasal processes
  4. Frontonasal process
  5. Maxillary processes


In tooth development, dentin formation begins
  1. Before enamel matrix is formed
  2. Simultaneously with enamel matrix formation
  3. After enamel matrix is formed
  4. At the time of eruption
  5. When Hertwig's sheath appears


The primary enamel cuticle is formed by the
  1. Outer dental epithelium
  2. Ameloblasts just before tooth eruption
  3. Fusion of oral epithelium and reduced enamel epithelium
  4. Ameloblasts after the enamel has been completed
  5. Fusion of outer dental epithelium and oral epithelium


The epithelial rests in the periodontal ligament are derived from the:
  1. Dental pulp
  2. Hertwig's sheath
  3. Vestibular lamina
  4. Dental sac
  5. Reduced enamel epithelium


The oral-nasal cavity of the embryo, just prior to the formation of the palate, is occupied by the:
  1. Frontonasal process
  2. Lateral palatine processes
  3. Tongue
  4. Buccopharyngeal membrane
  5. Nasal septum
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