Lip

Lips are a visible body part at the mouth of humans and many animals.

Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be erogenous when used in kissing and other acts of intimacy.

Structure

The upper and lower lips are referred to as the "Labium superius oris" and "Labium inferius oris", respectively. The juncture where the lips meet the surrounding skin of the mouth area is the vermilion border, and the typically reddish area within the borders is called the vermilion zone. The vermilion border of the upper lip is known as the cupid's bow. The fleshy protuberance located in the center of the upper lip is a tubercle known by various terms including the procheilon (also spelled prochilon), the "tuberculum labii superioris", and the "labial tubercle". The vertical groove extending from the procheilon to the nasal septum is called the philtrum.

The skin of the lip, with three to five cellular layers, is very thin compared to typical face skin, which has up to 16 layers. With light skin color, the lip skin contains fewer melanocytes (cells which produce melanin pigment, which give skin its color). Because of this, the blood vessels appear through the skin of the lips, which leads to their notable red coloring. With darker skin color this effect is less prominent, as in this case the skin of the lips contains more melanin and thus is visually darker. The skin of the lip forms the border between the exterior skin of the face, and the interior mucous membrane of the inside of the mouth.

Lip (gastropod)

In the shell of gastropod mollusks (a snail shell), the lip is the free margin of the peristome (synonym: peritreme) or aperture (the opening) of the gastropod shell.

In dextral (right-handed) shells (most snail shells are right-handed), the right side or outer side of the aperture is known as the outer lip (labrum). The left side of the aperture is known as the inner lip or columellar lip (labium) if there is a pronounced lip there. In those species where there is no pronounced lip, the part of the body whorl that adjoins the aperture is known as the parietal wall.

The outer lip is usually thin and sharp in immature shells, and in some adults (e.g. the land snails Helicella and Bulimulus). However in some other land snails and in many marine species the outer lip is thickened, or reflected (turned outwards). In some other marine species it is curled inwards (inflected), as in the cowries such as Cypraea. It can also be expanded, as in Strombus; it can have finger-like processes (digitate) or it can be fringed with spines (foliated), as in Murex. The lip is called emarginate when it is incised or slit, as in Pleurotomaria. It is described as effuse when the basal or anterior extremity is slightly produced, depressed or reflected, as in Thiara. When the lip is bent into an "s" curve it is called sinuous, as is the case in the sigmoidal margin ofJanthina exigua.

Lip (disambiguation)

Lip (plural lips or labia) may refer to:

As a word

In entertainment

Instant

An instant is an infinitesimal moment in time, a moment whose passage is instantaneous.

The continuous nature of time and its infinite divisibility was addressed by Aristotle in his Physics, where he wrote on Zeno's paradoxes. The philosopher and mathematician Bertrand Russell was still seeking to define the exact nature of an instant thousands of years later.

In physics, a theoretical lower-bound unit of time called the Planck time has been proposed, that being the time required for light to travel a distance of 1 Planck length. The Planck time is theorized to be the smallest time measurement that will ever be possible, roughly 10⁻⁴³ seconds. Within the framework of the laws of physics as they are understood today, for times less than one Planck time apart, one can neither measure nor detect any change. It is therefore physically impossible, with current technology, to determine if any action exists that causes a reaction in "an instant", rather than a reaction occurring after an interval of time too short to observe or measure.

Instant (album)

Instant is a double compact disc by the Dutch experimental post-punk band The Ex in conjunction with many guest musicians, notably members of Holland's Instant Composers Pool for whom the album is partially named (the Dutch term for "free improvisation" literally translates to "instant composition"). Though the entire album could have fit onto one 70-minute CD, the band formatted it for a briefer listening experience with each of Instant's 35-minute discs containing 16 short tracks. The album's 32 tracks feature shifting duos and trios of musicians performing on a wide array of conventional (electric guitars, reeds, brass, etc) and non-conventional (e.g., toffee-tin bass) instruments. The Ex had featured numerous guests on previous albums, but Instant was the band's first album of entirely instrumental music and improvised music.

Tracklist

Disc 1

Devicescape

Devicescape develops software for wireless networking, based on the IEEE 802.11 Wi-Fi standard and other network protocols. Founded in 2001 as Instant802 Networks, the company was renamed in January 2005. Devicescape is a venture backed private company.

Devicescape provides embedded software for wireless client devices, and a range of services which assist devices in connecting to Wi-Fi networks.

Corporate history

Instant802 Networks was founded in the end of 2000 by Eduardo de-Castro and Roy Petruschka, in San-Francisco. Simon Barber had joined as a third founder a few months after company incorporation. In 2004 the company began development of packaged software products, including security for emerging devices and complete access point packages. The software was used in devices ranging from LCD projectors, televisions and digital video recorders to PDAs and SOHO access points. In addition the company created a monitoring software product for wireless LANs that has been used by NTT BroadbandPlatform.