Alveoli. Alveoli are the functional units of the lungs that permit gas exchange between the air in the lungs and the blood in the capillaries of the lungs. Alveoli are found in small clusters called alveolar sacs at the end of the terminal bronchiole.
Swat or SWAT may refer to: SWAT (Special Weapons and Tactics), a paramilitary unit of law-enforcement agencies Swatting, a hoax intended to provoke a response from SWAT or other emergency personnel.
verb (used with object), swathed, swathing. 1. to wrap, bind, or swaddle with bands of some material; wrap up closely or fully. 2. to bandage. 3. to enfold or envelop, as wrappings do. 4. to wrap (cloth, rope, etc.) around something.