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Encyclopedia > Mouth (human)
Sagittal section of nose mouth, pharynx, and larynx.
Sagittal section of nose mouth, pharynx, and larynx.
A human mouth.
A human mouth.

The human mouth is covered by an upper and lower lip. Download high resolution version (600x861, 112 KB)Sagittal section of nose mouth, pharynx, and larynx. ... Download high resolution version (600x861, 112 KB)Sagittal section of nose mouth, pharynx, and larynx. ... Image File history File links Mouth. ... Image File history File links Mouth. ... This article or section does not cite its references or sources. ...


The mouth starts digestion by physically chewing the food and breaking it down with saliva. This article or section does not cite its references or sources. ...


The average male mouth holds a volume of about 100mL.

Contents

Function

They play an important role in speech (it is part of the vocal apparatus), facial expression, kissing, drinking (especially with a straw), breathing, and smoking. Look up Speech in Wiktionary, the free dictionary. ... Vocal apparatus is a term used in phonetics to designate all parts of human anatomy that can be used to produce speech. ... Photographs from the 1862 book Mécanisme de la Physionomie Humaine by Guillaume Duchenne. ... The Kiss by Francesco Hayez, 19th century. ... The word drink is primarily a verb, meaning to ingest liquids. ... For the play Breath by Samuel Beckett, see Breath (play). ... The cigarette is the most common method of smoking tobacco. ...


Infants are born with a sucking reflex, by which they instinctively know to suck for nourishment using their lips and jaw. A human infant An infant or baby is an extremely young person. ... Suction is the creation of a partial vacuum, or region of low pressure. ... The suckling of a newborn at its mothers nipple is an example of an instinctive behavior. ... It has been suggested that this article or section be merged with mandible. ...


Cultural aspects

According to general etiquette, the mouth is kept closed, especially when chewing. Etiquette, also known as decorum, is the code that governs the expectations of social behavior, the conventional norm. ...


Lips are often adorned with lipstick or lip gloss although in most human cultures this is an affectation for females only. Lipstick is a cosmetic product containing pigments, oils, waxes, and emollients that applies color and texture to the lips. ... Lip gloss products Lip gloss is a cosmetic product used primarily by teenage girls and women to give the lips shine and subtle color. ...


Development

The philtrum is the vertical groove in the upper lip, formed where the nasomedial and maxillary processes meet during embryo development. When these processes fail to fuse fully, a hare lip and/or cleft palate can result. The philtrum (Greek philtron, from philein, to love; to kiss) is the vertical groove in the upper lip, formed where the nasomedial and maxillary processes meet during embryonic development. ... The maxillary sinus is the largest paranasal sinus. ... It has been suggested that embryology be merged into this article or section. ... Embryogenesis is the process by which the embryo is formed and develops. ... Cleft lip is a congenital deformity caused by a failure in facial development during pregnancy. ...


The nasolabial folds are the deep creases of tissue that extend from the nose to the sides of the mouth. One of the first signs of age on the human face is the increase in prominence of the nasolabial folds.


See also


 
 

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