The front of the human head is called the<unk> . It includes several distinct areas, 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 revealing the teeth Facial appearance is vital for human recognition and communication. Facial muscles in humans allow expression of emotions. The<unk>  is itself a highly sensitive region of the human body and its expression may change when the brain is stimulated by any of the many human senses, such as touch, temperature, smell, taste, hearing, movement, hunger, or visual stimuli. Shape variability The<unk>  is the feature which best distinguishes a person. Specialized regions of the human brain, such as the fusiform<unk>  area (FFA), enable facial recognition; when these are damaged, it may be impossible to recognize<unk> s even of intimate family members. The pattern of specific organs, such as the eyes, or of parts of them, is used in biometric identification to uniquely identify individuals. The shape of the<unk>  is influenced by the bone-structure of the skull, and each<unk>  is unique through the anatomical variation present in the bones of the viscerocranium (and neurocranium). The bones involved in shaping the<unk>  are mainly the maxilla, mandible, nasal bone and zygomatic bone. Also important are various soft tissues, such as fat, hair and skin (of which color may vary). The<unk>  changes over time, and features common in children or babies, such as prominent buccal fat-pads disappear over time, their role in the infant being to stabilize the cheeks during suckling. While the buccal fat-pads often diminish in size, the prominence of bones increase with age as they grow and develop. Facial shape – such as facial symmetry – is an important determinant of beauty. Genes are a major factor in the particular appearance of a person's<unk>  with the high similarity of<unk> s of identical twins indicating that most of facial variability is determined genetically. Studies have identified genes and gene regions determining<unk>  shape and facial features. A 2021 study found that a version of a gene associated with lip thickness – possibly selected for due to adaption to cold climate via fat distribution – introgressed from ancient humans – Denisovans – into the modern humans Native Americans. Biological databases may be used to aggregate and discover associations between facial phenotypes and genes.
Face
Sexual function
Psychodynamics
Lint 
Itch
Auxology
Body image 
Lifestories