ANATOMY

Detailed explanation-1: -Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.

Detailed explanation-2: -The bronchi divide into smaller branches called bronchioles. And at the end of each bronchiole is a small duct (alveolar duct) that connects to a cluster of thousands of microscopic bubble-like structures, the alveoli. The word alveolus comes from the Latin word for “little cavity.”

Detailed explanation-3: -The word “alveolus” comes from the Latin word for “little cavity” while the term “alveolar sacs” is derived from the same word and is used to refer to the pouch where the alveoli are located.

Detailed explanation-4: -Complete answer: Air sacs are the internal compartment filled with air to facilitate internal air. Vertebrates have air sacs present in different body parts & perform various functions. Air sacs provide large surface area for gaseous exchange and increase the respiratory efficiency of the organism.

Detailed explanation-5: -The alveolar ducts are numerous ducts in the respiratory system that connect the alveolar sacs to the bronchioles. The alveolar sacs are sacs of many alveoli, which are the cells that exchange oxygen and carbon dioxide in the lungs.