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The face is a central organ of sense and is also very central in the expression of emotion among humans and among numerous other species. The face is normally found on the anterior (''frontal'', ''rostral'') surface of the head of animals or humans, although not all animals have faces.〔(【引用サイトリンク】 title=Year of Discovery, Faceless and Brainless Fish )〕 The face is crucial for human identity, and damage such as scarring or developmental deformities have effects stretching beyond those of solely physical inconvenience.〔 ==Structure== The front of the human head is called the face. It includes several distinct areas,〔(Face | Define Face at Dictionary.com ). Dictionary.reference.com. Retrieved on 2011-04-29.〕 of which the main features are: *The forehead, comprising the skin beneath the hairline, bordered laterally by the temples and inferiorly by eyebrows and ears. *The eyes sitting in the orbit and protected by eyelids, and eyelashes. * The distinctive human nose shape, nostrils, and nasal septum. *The cheeks covering the maxilla and mandibula (or jaw), the extremity of which is the chin. *The mouth, with the upper lip divided by the philtrum, sometimes reveals the teeth. Facial appearance is vital for human recognition and communication. Facial muscles in humans allow expression of emotions. The face is itself a highly sensitive region of the human body and its expression may change when the brain is stimulated by any of the five senses: touch, temperature, smell, taste, hearing, and visual stimuli.〔(Anatomy of the Face and Head Underlying Facial Expression ). Face-and-emotion.com. Retrieved on 2011-04-29.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Face」の詳細全文を読む スポンサード リンク
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