development of the face and oral cavity

• primitive mouth?

  stomodeum
• is a plate like structure, especially the thickening of the ectoderm marking the site of the future development in the early embryo of an organ of special sense?


  placode
• are a series of externally visible anterior tissue bands lying under the early brain that give rise to the structures of the head and neck?


  brachial/ pharyngeal arches
• the first brachial arch forms?

  lower lip, muscles of mastification, anterior portion of the alveolar process of the mandible
• second brachial arch forms?

  styloid process, stapes of the ear, stylohyoid ligament, part of the hyoid bone
• other brachial arches form?

  body of hyoid, posterior tongue, structures of the lower throat