One of the 74,771 articles currently pinpointed by Deja Vu is a 2006 paper by Ebtekar on cytokines and air pollution published in English by the Iranian Journal of Allergy, Asthma and Immunology.
A facial expression is one or more motions or positions of the muscles beneath the skin of the face.According to one set of controversial theories, these movements convey the emotional state of an individual to observers. Facial expressions are a form of nonverbal communication.acial expressions are vital to social communication between humans. They are caused by the movement of muscles that connect to the skin and fascia in the face. These muscles move the skin, creating lines and folds and causing the movement of facial features, such as the mouth and eyebrows.
Confidence votes 3. The muscles that are used in the process of smiling are the face muscles. There are twelve muscles that help the face to smile, a couple of them are, the Zygomaticus major and minor and the Levator anguli oris.There are of course 9 more that are included in the smile process.It is not clear exactly how many muscles are used when smiling.o smile, it take as many as 15 muscles in total, but  ultimately it depends on which elements of a smile you are  referring to. The act of raising the corners of your mouth â¦ is done  by three muscles, primarily the zygomaticus major and risorius  muscles and aided by the buccinator muscle.