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The nasolabial folds, commonly known as "smile lines" [1] or "laugh lines", [2] [self-published source] are facial features. They are the two skin folds that run from each side of the nose to the corners of the mouth. They are defined by facial structures that support the buccal fat pad. [3] They separate the cheeks from the upper lip.
Facial expression is the motion and positioning of the muscles beneath the skin of the face. These movements convey the emotional state of an individual to observers and are a form of nonverbal communication.
A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a Duchenne smile. Among humans, a smile expresses delight, sociability, happiness, joy, or amusement.
Ordinarily, a big smile makes your eyes crinkle at the corners, but the study authors left their model's eyes alone because facial reconstruction techniques are pretty limited when it comes to ...
Anatomical model – Three-dimensional representation of human or animal anatomy; Body image – Aesthetic perception of one's own body; Cell physiology – Study of cell activity; Comparative anatomy – Study of similarities and differences in the anatomy of different species
Cold hands are common, but experts say certain red flags can mean a bigger health issue is at play. (Getty Images) (Yuliya Movchan via Getty Images) If you find yourself wondering why your hands ...
Typhoid facies. The Hippocratic facies (Latin: facies Hippocratica) [1] is the change produced in the face recognisable as a medical sign known as facies and prognostic of death.
So we can learn more about a dog’s smile and what it could mean, Juliana DeWillems, the owner and head trainer at JW Dog Training & Behavior, has offered some examples in a recent Instagram post ...