air sac
"Air sacs" are crucial components in the respiratory systems of various animals, facilitating efficient gas exchange.
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Definition
B2Human Anatomy
(technical, academic)Tiny, air-filled spaces in the lungs where oxygen and carbon dioxide are exchanged.
Example
- The air sacs in the lungs are essential for breathing and gas exchange.
B2Ornithology
(technical, academic)Thin-walled, air-filled structures connected to the lungs, aiding in breathing and reducing body weight for flight.
Example
- Birds have air sacs that help them stay light and efficient in flight.
B2Entomology
(technical, academic)Thin-walled expansions of the trachea in insects, aiding in respiration by storing and distributing air.
Example
- Insects rely on air sacs to enhance their respiratory efficiency.
Similar
Terms that have similar or relatively close meanings to "air sac":
air cellair ventair holeair bladderair shedlower airwayair plantair levelupper airwayair sandwichsperm sacdead space