Lips are the movable parts around the mouth. They are used to open the mouth for food intake, for speech, and for acts of intimacy.
Naudin C., Grumbach N., Larousse Médical, 3ième édition, Paris, 2003.
Marcovitch H., Black’s Medical Dictionary, 41st edition, London, 2005.
Leikin J. B., Lipsky M. S., Complete Medical Encyclopedia, First edition, New York, 2003.
Wikipedia, the free encyclopedia (www.wikipedia.org).
The information above should be used as a reference only. Any medical decision should not be taken before consulting a health care professional.
The masculine gender may have been more used in the article, but without prejudice, to make reading easier.