![]() ![]() ![]() Muscles are divided into three parts of origo and insersio as the tip of muscle and belli as the midpoint of the muscle, so any movement occurs then the muscle part belli will expand or swell. In muscle anatomy, that every moving muscle must be contraction, and in the event of contraction, the muscle will expand or swell. In his research, Paul Ekman said six basic expressions of happiness, sadness, shock, fear, anger, and disgust. In research conducted Paul Ekman got a standardization of expression in the format of a movement called the Facial Action Coding System (FACS). Facial expression is affected by the cranial nerve VII or Nervus Facialis. In a large Indonesian dictionary, the expression is a disclosure or process of declaring, ie showing or expressing intentions, ideas of feelings and so on. Facial expression or mimic is one of the results of muscle motion on the face. ![]()
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