Mouth in a Passport Photo: Guidelines for a Neutral Expression

The mouth is an organ in the shape of a cavity located in the head, along with the nose and ears. The mouth is the main entrance of the digestive system, as all food and drink enters the body through it.

In addition, the mouth plays a significant role in communication through spoken language. The third important function is breathing. The mouth is recognizable by the lips on the outside.

Components of the Mouth

Components of the mouth include:

• Lips and cheeks: the visible parts in the face
• Oral cavity: the inside of the cheeks and lips, including the palate, the buccal mucosa, and the floor of the mouth
• Jaws: located in the oral cavity and contains the teeth and molars
• Tongue: located in the oral cavity
• Uvula: located at the back of the oral cavity, where the throat begins

Rules for the Mouth on Passport Photos

Rules for the mouth on passport photos require the mouth to be closed. The mouth plays an important role in maintaining a neutral facial expression. The corners of the mouth should not be raised (smiling) or lowered (looking sad).