1) Alveolus 2) Avian lung outgrowth 3) Cavity in a lung 4) Hollow part of a bird 5) Hollow space in birds 6) Lung compartment 7) Lung feature 8) Lung structure 9) Part of the lung 10) Pulmonary alveolus 11) Respiratory cavity
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https://www.crosswordclues.com/clue/air-sac
A dilated portion of a trachea
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http://en.wikipedia.org/wiki/Glossary_of_entomology_terms
• One of the spaces in different parts of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell.
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http://thinkexist.com/dictionary/meaning/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 ... [3 related articles]
Found on
http://www.britannica.com/eb/a-z/a/33
A dilated portion of a trachea
Found on
http://www.earthlife.net/insects/glossary.html
As used in this guide, an expandable, featherless, often brightly colored and textured area on the sides of the neck in some birds; certain grouse and prairie-chickens inflate air sacs in courtship displays. In anatomical usage, the term refers to internal organs connected to the lungs in all birds.
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http://www.encyclo.co.uk/local/22218
a part of the complex respiratory system in birds; air filled cavities in the lungs and bones; aids in breathing and temperature regulation
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http://www.encyclo.co.uk/local/22220
Air' sac` (Anat.) One of the spaces in different parts of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell.
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http://www.encyclo.co.uk/webster/A/48
Type: Term Synonyms: alveolar sac
Found on
http://www.medilexicon.com/medicaldictionary.php?t=79270
[
n] - any of the thin-walled extensions of the tracheae of insects 2. [n] - any of the membranous air-filled extensions of the lungs of birds
Found on
http://www.webdictionary.co.uk/definition.php?query=air%20sac
Any of a system of cavities in a bird's body, which forms part of the respiratory system.
Found on
https://www.birds-of-north-america.net/Bird_Terminology.html
In birds, a thin-walled extension of the lungs. There are nine of these and they extend into the abdomen and bones, effectively increasing lung capacity. The sacs subdivide into further air spaces which partially replace the marrow in many of the bird's bones. The air space in these bones assists flight by making them lighter. In mammals, i...
Found on
https://www.encyclo.co.uk/local/21221
An expandable, featherless, often brightly colored and textured area on the sides of the neck in some birds; certain grouse and prairie-chickens inflate air sacs in courtship displays. In anatomical usage, the term refers to internal organs connected to the lungs in all birds.
Found on
https://www.encyclo.co.uk/local/22222
a sac containing air. · alveolus (def. 2). · any of certain cavities in a bird's body connected with the lungs. · a saclike dilation of the wall of a trachea in many insects.
Found on
https://www.infoplease.com/dictionary/air-sac
No exact match found.
