Development Of Upper And Lower Lips

Development Of Upper And Lower Lips

Development of upper lip and lower lip
Answer:

Development of upper lip:

“Understanding upper and lower lip development through FAQs: Stages, functions, and uses explained”

• Each maxillary process grows medially
• It fuses first with the lateral nasal process and then the medial nasal process
• The mesodermal basis of the lateral part of the lip is formed from the maxillary process
• The overlying skin is derived from ectoderm covering the process
• The mesodermal basis of the medial part of the lip is formed from the frontonasal process
• The ectoderm of the maxillary process overgrows the mesoderm to meet the opposite maxillary process in the midline
• This entire upper lip is formed
• Muscles of the upper lip are derived from the mesoderm of the second branchial arch

“Importance of studying lip development for medical students: Questions explained”

Development of lower lip:

• The mandibular processes of the two sides grow towards each other and fuse in the midline to form the lower lip

Formation of upper lip from maxillary process