air sack造句

• Abnormalities included partially albinistic plumage, deformed toes, tumors, deformed tail feathers, deformed beaks, and deformed air sacks.
• It rearranges lipid molecules in the fluid lining the lung so that tiny air sacks in the lung, called alveoli, can more easily inflate.
• The tumor cells seem to be arranged in the same pattern as the cells of the small air sacks ( alveoli ) in the lungs.
• The pneumatic openings, the entrance holes for the air sacks, at the sides of the neural arch are small and placed in a low position.
• The body skeletons of pterosaurs more closely resemble those of coldblooded lizards and alligators than they do the bodies of warmblooded birds, which contain abdominal air sacks that are used for respiration, he said : another indication that pterosaurs were coldblooded.
• The generic name is derived from Greek " teichos ", " wall ", and " osteon ", " bone ", referring to the fact that the vertebrae, though hollow inside, had no lateral pneumatic foramina, openings in the side wall for air sacks to invade the bone.