What is "dead space"

n. 1 (context physiology English) air that is inhaled by the body in breathing, but does not partake in gas exchange. 2 (context film English) Picture information that is either masked off or cropped out of viewing area, whether at the top or bottom, or to the sides.

In physiology, dead space is the volume of air which is inhaled that does not take part in the gas exchange, either because it (1) remains in the conducting airways, or (2) reaches alveoli that are not perfused or poorly perfused. In other words, not all the air in each breath is available for the exchange of oxygen and carbon dioxide. Mammals breathe in and out of their lungs, wasting that part of the inspiration which remains in the conducting airways where no gas exchange can occur.

Benefits do accrue to a seemingly wasteful design for ventilation that includes dead space.

1. Carbon dioxide is retained, making a bicarbonate-buffered blood and interstitium possible.
2. Inspired air is brought to body temperature, increasing the affinity of hemoglobin for oxygen, improving O uptake.

1. Particulate matter is trapped on the mucus that lines the conducting airways, allowing its removal by mucociliary transport.
2. Inspired air is humidified, improving the quality of airway mucus.

In humans, about a third of every resting breath has no change in O and CO levels. In adults, it is usually in the range of 150 mL.

Dead space can be increased (and better envisioned) by breathing through a long tube, such as a snorkel. Even though one end of the snorkel is open to the air, when the wearer breathes in, they inhale a significant quantity of air that remained in the snorkel from the previous exhalation. Thus, a snorkel increases the person's dead space by adding even more "airway" that doesn't participate in gas exchange.

Dead Space was the only album released by Omaha, Nebraska band Slowdown Virginia. Released by Lumberjack Records (which later became Saddle Creek) in 1994, the album was distributed locally on compact disc. Slowdown Virginia broke up shortly after the release of the album, with three of the four members forming the band Cursive a month later.

Dead Space is a science fiction survival horror video game developed by EA Redwood Shores (now Visceral Games) for Microsoft Windows, PlayStation 3, and Xbox 360. The game was released on all platforms through October 2008. The game puts the player in control of an engineer named Isaac Clarke, who battles the Necromorphs, monstrous reanimated human corpses, aboard an interstellar mining ship, the USG Ishimura.

The game was met with widespread critical acclaim, and has sold over 2 million copies. Sequels Dead Space 2 and Dead Space 3 were released on January 25, 2011 and February 5, 2013, respectively.

Dead Space is a 2008 comic book prequel to the game Dead Space: Extraction and to the film Dead Space: Downfall. The video game Dead Space continues where the film ended. It is published by Image Comics and is written by Antony Johnston, who also wrote the game's dialogue, with art by Ben Templesmith. An animated version of the comic was available to download via Xbox Live, PSN and various game review sites such as Gametrailers.com in summer 2008. The animated version is also available as bonus material in Dead Space: Extraction.

Dead spaces are "blindspots" in a fortification's visual field which were relatively sheltered from defending fire.

Dead space may refer to:

Dead Space is a 1991 science-fiction film involving the crew members of a space station orbiting Saturn when they face a killer virus. The movie is a remake of the 1982, Roger Corman-produced, Mutant and while there are minor differences, it still retains the main storyline and character set-up.

In 2010 Shout! Factory released the film on DVD, packaged as a double feature with The Terror Within as part of the Roger Corman Cult Classics collection.

Dead Space is a third-person shooter video game series created by Glen Schofield, developed by Visceral Games and published by Electronic Arts. The franchise centers on a series of video games of the third-person shooter genre, and also includes two motion pictures and a comic book series, with more media planned for the future. The series began in 2008 as an eponymous video game aimed at creating, in Schofield's words, "the most terrifying game we could"; the game was a success and spawned a prequel and later a sequel released in 2011.

Each installment in the Dead Space series is a continuation or addition to a continuing storyline which began with the release of the original eponymous game. The game is set in a 26th-century science fiction universe featuring environments, weapons and characters typical of the genre. The series' chronology is not presented in a linear format, with sections of the storyline presented in the form of either prequels or sequels, and in different media aside from only video games. Generally speaking, the series focuses on a man named Isaac Clarke and the horrors that surround him.

So far the series has been commercially and critically successful, selling over 8 million copies; the first game and its sequel received widely positive reviews from the majority of critics and the first game has received a number of industry awards for many different elements of its gameplay and development.

On March 4, 2013, it was reported that EA had shut down production of Dead Space 4 due to lower-than-expected sales of Dead Space 3. EA Games Label president Frank Gibeau had previously said that Dead Space 3 needed to sell 5 million copies to be successful. The following day, EA said the report was "patently false".

Dead Space is a survival horror third-person shooter video game developed by IronMonkey Studios and published by Electronic Arts for iOS, BlackBerry Tablet OS, Xperia Play, Android and BlackBerry 10 devices. The game was also scheduled for release on Windows Phone 8 as part of a deal with Nokia that saw several EA games released exclusively on Nokia branded Windows Phones, but it was cancelled prior to release.

Within the Dead Space series, the game is set after the events of the original Dead Space, but prior to the events of Dead Space 2 and shows how the Necromorph outbreak spread from the government to public sectors.