QS Study

Development of the face: The face is developed by the fusion of a number of important processes around the stomodeum, namely front nasal process, maxillary process, and mandibular process. The external human face develops between the 4th and 6th week of embryonic development. The development of the face is completed by the 6th week. This development is completed by the 12th week.

Development of Face 1

Fig: Development of face

Structure contributing to the formation of the face –

Structures formed:

  1. Forehead, bridge of nose, medial & lateral nasal prominences,
  2. Cheeks, a lateral portion of the upper lip,
  3. Philtrum of upper lip, crest & tip of the nose,
  4. Alae of the nose,
  5. Lower lip,
  6. Muscles of the face.

Developed from:

  1. Frontonasal prominence,
  2. Maxillary prominence,
  3. Medial nasal prominence,
  4. Lateral nasal prominence,
  5. Mandibular prominence
  6. Mesoderm of the 2nd pharyngeal arch.

The face develops from the outward growth of tissue located rostral to the cranium & pharynx. The lower jaw and most of the upper jaw is formed by growth of the first pharyngeal (branchial) arch. The upper incisor region and the nose and forehead (frontal region) are formed from tissue located rostral to the neural tube (frontonasal prominence).

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