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.
Facial muscles. Anatomy and supply. The facial muscles are a group of about 20 flat skeletal muscles lying under the facial skin. Most of them originate from the skull or fibrous structures and radiate to the skin through an elastic tendon. Contrary to the other skeletal muscles they are not surrounded by a fascia (except the buccinator).