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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Necropsy was performed, and a large, single nematode was discovered in a cranial air sac over the syrinx, consistent with the intrathoracic portion of the clavicular air sac (Fig 1).
Fungal culture of the air sac identified fungal colonies consistent with Aspergillus section Nigri.
In contrast, our data indicate that pandemic (H1N1) 2009 virus cannot productively infect chickens at the ages of 1 week (air sac inoculation), 12 weeks (contact exposure, intravenous inoculation), or 15 weeks (oculo-oronasal inoculation), or turkeys at the ages of 1 week (air-sac inoculation) and 4 weeks (contact exposure) because neither virus excretion nor seroconversion was observed during the 10-day observation period.
We report a case of air sac nematode (Serratospiculum tendo) infection in an adult male Austral peregrine falcon (Falco peregrinus cassini) admitted to a rehabilitation center in Mendoza Province, Argentina, in 2017.
Sampling procedure: Trachea (154), lungs (113) and air sacs (113) were collected from each bird at necropsy and divided in two halves, one for immediate inoculation in Fray's broth on spot and other preserved for DNA extraction.
The subcutaneous emphysema noted after surgery in both cases is likely a result of trauma to the air sac and incomplete closure of the body wall at the time of surgery.
To find out how having an air sac changed the sounds produced, Dr de Boer created plastic models of the mouth, tongue and throat and forced air down them to produce different vowel sounds.
They introduced a variety of nano-scaled particles (a nanometer is one-billionth of a meter) into the air sac channel.
These conditions were conducive to fungal propagation on the air sacs due to localized disruption of abdominal air sac epithelial immunity by implantation of metastatic neoplastic cells.
Postoperatively, normal breathing was confirmed and the air sac cannula was removed.
Image quality and diagnostic potential improve with organ enlargement and resulting air sac displacement, as well as with fluid accumulation in the coelomic cavity.
Histologically, within the air sacs and the air sac walls, multiple longitudinal and cross sections of adult male and female nematodes were observed.