The level of oxygen present in mammalian blood - critical for survival - is controlled by a complex feedback system triggering more or less breathing, alterations in blood pressure etc.. It's dependent on 'sensors', one primary sensor is called the Carotid Body.
“Oxygen (O2) sensing by the carotid body and its chemosensory reflex is critical for homeostatic regulation of breathing and blood pressure.”
However, the molecular mechanisms for detecting variations in oxygen partial pressure have yet to be identified. There may be multiple mechanisms and could vary between species.
Further reading on O2 regulation: Oxygen sensors in context Biochimica et Biophysica Acta (BBA) - Bioenergetics Volume 1777, Issue 1, January 2008, Pages 1–14
Also see :
Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)
You are currently viewing an auto-translated version of Wikenigma
Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.
Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.