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A '''respiratory bypass system''' was a part of [[Gallifreyan physiology]] which allowed [[Time Lord]]s to go without breathing for longer periods of time than most [[human]]s could. ([[AUDIO]]: ''[[Return of the Krotons]]'') It also allowed them to filter out unpleasant smells. ([[PROSE]]: ''[[Cat's Cradle: Witch Mark]]'')
{{Cleanup|Most of these televised sources are heavily dubious, and need better citations.}}
A '''respiratory bypass system''' was a part of [[Gallifreyan physiology]] which allowed [[Time Lord]]s to go without breathing for longer periods of time than most [[human]]s could. ([[AUDIO]]: ''[[Return of the Krotons (audio story)|Return of the Krotons]]'') It also allowed them to filter out unpleasant smells. ([[PROSE]]: ''[[Cat's Cradle: Witch Mark (novel)|Cat's Cradle: Witch Mark]]'')


The Doctor used it to survive more than once. [[Fourth Doctor|The Doctor's fourth self]] used his respiratory bypass system to survive being strangled by an [[Osirian service robot]]. ([[TV]]: ''[[Pyramids of Mars]]'') He later used it to avoid inhaling [[helium]]. ([[TV]]: ''[[The Robots of Death]]'') [[Fifth Doctor|The fifth incarnation]] used it to survive brief exposure to the [[vacuum|vacuum of space]] ([[TV]]: ''[[Four to Doomsday]]'') as well as being hanged ([[PROSE]]: ''[[A Town Called Eternity]]'') and retrieving the milk from a queen bat in an airless cavern. ([[TV]]: ''[[The Caves of Androzani (TV story)|The Caves of Androzani]]'')
The Doctor used it to survive more than once. The [[Second Doctor]] credited his survival on the surface of [[Mnemosyne (moon)|Mnemosyne]] to his respiratory bypass system. ([[PROSE]]: ''[[The Wheel of Ice (novel)|The Wheel of Ice]]'') The [[Third Doctor]] used his respiratory bypass system to survive being strangled by the [[Nestene Consciousness]]. ([[TV]]: ''[[Spearhead from Space (TV story)|Spearhead from Space]]'') The [[Fourth Doctor]] used his respiratory bypass system to survive being strangled by an [[Osiran service robot]]. ([[TV]]: ''[[Pyramids of Mars (TV story)|Pyramids of Mars]]'') He later used it to avoid inhaling [[helium]]. ([[TV]]: ''[[The Robots of Death (TV story)|The Robots of Death]]'') The [[Fifth Doctor]] used it to survive brief exposure to the [[vacuum|vacuum of space]], ([[TV]]: ''[[Four to Doomsday (TV story)|Four to Doomsday]]'') to recover from being [[hanging|hanged]] ([[PROSE]]: ''[[A Town Called Eternity (short story)|A Town Called Eternity]]'') and to retrieve the milk from a [[queen bat]] in an airless cavern. ([[TV]]: ''[[The Caves of Androzani (TV story)|The Caves of Androzani]]'')
[[Sixth Doctor|His sixth persona]] avoided [[hypoxia]] when he shut down atmospheric controls to the mines on the planet [[Onyakis]] to defeat the [[Kroton]]s there ([[AUDIO]]: ''[[Return of the Krotons]]''), using this advantage again to avoid breathing in nerve gas. ([[TV]]: ''[[The Two Doctors]]'') In his [[Seventh Doctor|seventh body]], the Doctor used his respiratory bypass system to avoid being overcome by [[ether]]. ([[PROSE]]: ''[[Timewyrm: Genesys]]'') His [[eleventh incarnation]] survived the vacuum of low earth orbit long enough to find and put on an [[impact suit]] -- backwards. ([[TV]]:'' [[The Doctor, the Widow and the Wardrobe]]'')


At least one [[human]] may have developed such a system: [[Timothy Dean]], who gained one when he was infected with the [[Seventh Doctor]]'s [[DNA]]. ([[PROSE]]: ''[[Human Nature (novel)|Human Nature]]'')
The [[Sixth Doctor]] used it to avoid breathing in [[vorum gas]]. ([[TV]]: ''[[The Two Doctors (TV story)|The Two Doctors]]'') He also used it to escape [[hypoxia]] when he shut down atmospheric controls to the mines on the planet [[Onyakis]] to defeat the [[Kroton (species)|Krotons]] there. ([[AUDIO]]: ''[[Return of the Krotons (audio story)|Return of the Krotons]]'') In his [[Seventh Doctor|seventh incarnation]], the Doctor used his respiratory bypass system to avoid being overcome by [[ether (chemical)|ether]]. ([[PROSE]]: ''[[Timewyrm: Genesys (novel)|Timewyrm: Genesys]]'')
 
When the Doctor's [[Binary vascular system|second heart]] was extracted by [[Sabbath]] in his [[Eighth Doctor|eighth incarnation]], one of the abilities the Doctor lost was the respiratory bypass system, leaving him vulnerable to being strangled until Sabbath allowed the heart to die and the Doctor to grow a new one. ([[PROSE]]: ''[[The Adventuress of Henrietta Street (novel)|The Adventuress of Henrietta Street]]'', ''[[Hope (novel)|Hope]]'', ''[[Camera Obscura (novel)|Camera Obscura]]'')
 
The [[Tenth Doctor]] was able to use the bypass system to continue walking in a hospital while carrying [[Martha Jones]], while everyone else fell unconscious. ([[TV]]: ''[[Smith and Jones (TV story)|Smith and Jones]]'') The [[Twelfth Doctor]] also used it so the [[Clockwork Droid|clockwork droids]] couldn't detect him ([[TV]]: ''[[Deep Breath (TV story)|Deep Breath]]'') and when [[Gus (Mummy on the Orient Express)|Gus]] was draining the ''[[Orient Express (spacecraft)|Orient Express]]'' of oxygen. ([[TV]]: ''[[Mummy on the Orient Express (TV story)|Mummy on the Orient Express]]'')
 
[[River Song]] had a respiratory bypass system, but she hadn't used it very much. When she and [[Isabella Clerkwell]] were trapped in a room where the air had been sucked out, Isabella passed out and River struggled to remain conscious. She tried to activate her respiratory bypass system but due to her lack of practice with it, she didn't have enough time to activate it. ([[AUDIO]]: ''[[I Went to a Marvellous Party (audio story)|I Went to a Marvellous Party]]'')
 
[[Romana II]] managed to activate her respiratory bypass system to survive the gases of the malfunctioning [[TARDIS defence shield]]s. ([[TV]]: ''[[The Horns of Nimon (TV story)|The Horns of Nimon]]'')
 
Despite its usefulness in various occasions, the bypass system still has its limitations. It was still possible for a Time Lord to die due to a lack of air from drowning in water. ([[TV]]: ''[[Turn Left (TV story)|Turn Left]]'')
 
The [[Twelfth Doctor]] suffered seemingly permanent [[blindness]] after he was forced to expose himself to the vacuum of space when traversing the exterior of a space station, as he was forced to donate his spacesuit's helmet to his companion [[Bill Potts]] when hers was damaged, although he survived the lack of oxygen by using his respiratory bypass system to prolong the time he spent walking in the vacuum. ([[TV]]: ''[[Oxygen (TV story)|Oxygen]]'')
 
When climbing through the waste disposal pipes at the [[Bekdel Institute]], [[Missy]] breathed through her respiratory bypass systems to not have to take in the smell. ([[AUDIO]]: ''[[The Bekdel Test (audio story)|The Bekdel Test]]'')
 
== Behind the scenes ==
* The respiratory bypass system was first hinted at in [[TV]]: ''[[The Space Pirates (TV story)|The Space Pirates]]'', where the [[Second Doctor]] tells [[Zoe Heriot]] that he does not require as much oxygen as her and [[Jamie McCrimmon]].
 
[[Category:Respiratory system]]
[[Category:Time Lord abilities]]
[[Category:Gallifreyan physiology]]


[[es:Sistema de derivación respiratorio]]
[[es:Sistema de derivación respiratorio]]
[[Category:Anatomy and physiology]]

Latest revision as of 07:16, 3 April 2024

This article needs a big cleanup.

Most of these televised sources are heavily dubious, and need better citations.

These problems might be so great that the article's factual accuracy has been compromised. Talk about it here or check the revision history or Manual of Style for more information.

A respiratory bypass system was a part of Gallifreyan physiology which allowed Time Lords to go without breathing for longer periods of time than most humans could. (AUDIO: Return of the Krotons) It also allowed them to filter out unpleasant smells. (PROSE: Cat's Cradle: Witch Mark)

The Doctor used it to survive more than once. The Second Doctor credited his survival on the surface of Mnemosyne to his respiratory bypass system. (PROSE: The Wheel of Ice) The Third Doctor used his respiratory bypass system to survive being strangled by the Nestene Consciousness. (TV: Spearhead from Space) The Fourth Doctor used his respiratory bypass system to survive being strangled by an Osiran service robot. (TV: Pyramids of Mars) He later used it to avoid inhaling helium. (TV: The Robots of Death) The Fifth Doctor used it to survive brief exposure to the vacuum of space, (TV: Four to Doomsday) to recover from being hanged (PROSE: A Town Called Eternity) and to retrieve the milk from a queen bat in an airless cavern. (TV: The Caves of Androzani)

The Sixth Doctor used it to avoid breathing in vorum gas. (TV: The Two Doctors) He also used it to escape hypoxia when he shut down atmospheric controls to the mines on the planet Onyakis to defeat the Krotons there. (AUDIO: Return of the Krotons) In his seventh incarnation, the Doctor used his respiratory bypass system to avoid being overcome by ether. (PROSE: Timewyrm: Genesys)

When the Doctor's second heart was extracted by Sabbath in his eighth incarnation, one of the abilities the Doctor lost was the respiratory bypass system, leaving him vulnerable to being strangled until Sabbath allowed the heart to die and the Doctor to grow a new one. (PROSE: The Adventuress of Henrietta Street, Hope, Camera Obscura)

The Tenth Doctor was able to use the bypass system to continue walking in a hospital while carrying Martha Jones, while everyone else fell unconscious. (TV: Smith and Jones) The Twelfth Doctor also used it so the clockwork droids couldn't detect him (TV: Deep Breath) and when Gus was draining the Orient Express of oxygen. (TV: Mummy on the Orient Express)

River Song had a respiratory bypass system, but she hadn't used it very much. When she and Isabella Clerkwell were trapped in a room where the air had been sucked out, Isabella passed out and River struggled to remain conscious. She tried to activate her respiratory bypass system but due to her lack of practice with it, she didn't have enough time to activate it. (AUDIO: I Went to a Marvellous Party)

Romana II managed to activate her respiratory bypass system to survive the gases of the malfunctioning TARDIS defence shields. (TV: The Horns of Nimon)

Despite its usefulness in various occasions, the bypass system still has its limitations. It was still possible for a Time Lord to die due to a lack of air from drowning in water. (TV: Turn Left)

The Twelfth Doctor suffered seemingly permanent blindness after he was forced to expose himself to the vacuum of space when traversing the exterior of a space station, as he was forced to donate his spacesuit's helmet to his companion Bill Potts when hers was damaged, although he survived the lack of oxygen by using his respiratory bypass system to prolong the time he spent walking in the vacuum. (TV: Oxygen)

When climbing through the waste disposal pipes at the Bekdel Institute, Missy breathed through her respiratory bypass systems to not have to take in the smell. (AUDIO: The Bekdel Test)

Behind the scenes[[edit] | [edit source]]