air sac


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Related to air sac: bronchiole

air sac

[′er ‚sak]
(geology)
(invertebrate zoology)
One of the large, thin-walled structures associated with the tracheal system of some insects.
(vertebrate zoology)
In birds, any of the small vesicles that are connected with the respiratory system and located in bones and muscles to increase buoyancy.
References in periodicals archive ?
3 million years ago had hyoids that were similar in shape to those of present day apes, suggesting they too had air sacs.
Conclusions and Clinical Relevance--Results indicated that anesthetized Humboldt penguins had the lowest air sac volume and highest lung densities in dorsal recumbency.
Further complications, such as damage to the air sacs or bleeding, predominantly occurred in subsequent endoscopies.
Based on the histologic findings, the diagnosis was air sac cystadenocarcinoma (Fig 3).
Because of expected postoperative inflammation of the trachea and the need to provide intratracheal medication, the air sac cannula was replaced before anesthetic recovery.
dagger]) Three juvenile chickens and turkeys inoculated through the air sac were killed on days 0, 2, 4, 6, 8, and 14 posinoculation, and left and right lung lobes were removed for analysis by real-time reverse transcription-PCR.
Emphysema causes damage to tiny air sacs within the lungs.
Because of their small size, PM10s penetrate to the furthest corners of the lungs where they lodge in the fine air sacs.
The particles enter the air sacs in the lungs where they can cause breathing problems.
So far at least 73 people at the plant have been diagnosed as 'definitely or probably' suffering from alveolitis - a disease that affects the tiny air sacs of the lungs - and occupational asthma.
Without surfactant, the air sacs in the lungs collapse and are unable to absorb sufficient oxygen resulting in RDS.
3) alveoli: Tiny air sacs in your lungs are called alveoli (al-VEE-oh-lie)