system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The upper lip is derived from
assistant
The correct answer is  The upper lip is formed by the fusion of two maxillary prominences with the two medial nasal prominences Ref : Langman's Medical Embryology 14e pg 295,298.