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Note:By about 11 weeks, the two sides of the roof of the mouth fuse together along the midline and also fuse with the nasal septum above.Label Key:1. right upper lip 2. tongue 3. roof of mouth (hard palate) 4. line of fusion along the midline of the palate | ||
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks. |