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The vermilion border (sometimes spelled vermillion border), also called margin or zone, is the normally sharp demarcation between the lip and the adjacent normal skin. It represents the change in the epidermis from highly keratinized external skin to less keratinized internal skin.
The inflammation may include the perioral skin (the skin around the mouth), the vermilion border, or the labial mucosa. [1] The skin and the vermilion border are more commonly involved, as the mucosa is less affected by inflammatory and allergic reactions. [1] Cheilitis is a general term, and there are many recognized types and different causes.
The vermilion is different both from the oral mucosa and from regular skin, as it includes a cornified stratum corneum and lacks salivary glands, unlike the oral mucosa, but is thinner and more vascularised than regular skin, and lacks both hair follicles and sweat glands. The pattern of the vermilion border defines the areas of the lip:
Cupid's bow feature of a human lip. The upper and lower lips are referred to as the labium superius oris and labium inferius oris, respectively. [2] [3] The juncture where the lips meet the surrounding skin of the mouth area is the vermilion border, [4] and the typically reddish area within the borders is called the vermilion zone. [5]
Troops assigned to the federal mission assist U.S. Customs and Border Protection personnel with logistics, helicopter support, data entry and crossing detection, in addition to other tasks that ...
The commissure is the corner of the mouth, where the vermillion border of the superior labium (upper lip) meets that of the inferior labium (lower lip). The commissure is important in facial appearance, particularly during some functions, including smiling. As such it is of interest to dental surgeons.
Monthly border crossings plummeted in 2024, compared to the record highs in 2023. Roughly 46,000 people crossed the border illegally in November, the lowest number during the Biden administration.
A "Blue Norther" is expected to sweep through the central U.S. this weekend, bringing sudden, sharply colder air to the Plains states. (MAPS: Current Temps | 10-Day US Forecast Highs/Lows)What is ...