16 Questions
At what stage of embryonic development do the facial swellings arise?
4th and 6th weeks
What is the primary palate formed by the fusion of?
Medial nasal and maxillary processes
What is the result of fusion between the palatal processes growing from the oral surfaces of the maxillary processes?
Formation of the secondary palate
What type of bone develops in the primary palate?
Membrane bone
Which part of the palate does not become ossified?
Posterior portions of the lateral palatine processes
What indicates the line of fusion of the lateral palatine processes?
Palatine raphe
What is the last portion of the palate to form?
Soft palate and uvula
What is the potential result of a faulty merging and fusion site?
Facial cleft or cleft palate
At what week of intrauterine life does the first sign of tooth development occur?
6th week
What is the origin of cells that form tooth germs?
Ectoderm of the first pharyngeal arch and ectomesenchyme of the neural crest
What is the next stage of tooth development after the initiation/bud stage?
Cap stage
What happens to the ectomesenchymal cells during the cap stage?
They stop producing extracellular substances
What is the function of the dental lamina?
It connects the developing tooth bud to the epithelial layer of the mouth
Which of the following forms the enamel?
Enamel organ
What is the function of the dental sac or follicle?
It gives rise to the supporting structures of a tooth
During which stage does the tooth bud grow around the ectomesenchymal aggregation?
Cap stage
Explore the process of palatal development between the 4th and 6th weeks of embryonic development, including the fusion of different processes. Learn about the formation of the primary and secondary palate in this crucial period of anatomical growth.
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