Anatomy
air sac
air sac
Subclass of:
Animal Structures
Definitions related to air sacs:
-
A part of the respiratory system in multiple species (predominantly avian) which are variably connected with the lung.NCI ThesaurusU.S. National Cancer Institute, 2021
-
Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
-
(air bladder) An organ in modern bony fish that develops from latral or dorsal wall of gut, and can fill with oxygen for bouyancy, hearing, or sound production.CRISP ThesaurusNational Institutes of Health, 2006
-
Air sac, any of the air-filled extensions of the breathing apparatus of many animals. Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase...Encyclopedia Britannica, Inc., 2020
Return to OpenMD Medical Dictionary
> A
This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.