Where is the alveoli located in the human body?
The alveoli are located in the alveolar sacs of the lungs in the pulmonary lobules of the respiratory zone, representing the smallest functional units in the respiratory tract. They are also present in the respiratory bronchioles as scattered outpockets, extending from their lumens. The respiratory bronchioles lead into alveolar ducts which are deeply lined with alveoli. Each respiratory bronchiole gives rise to between two and eleven alveolar ducts. Each duct opens into five or six alveolar sacs into which clusters of alveoli open. New alveoli continue to form until the age of eight years. 
In what organ are the alveoli located in the body?
lungs
Pulmonary alveolus
No context provided
In what part of the lungs are the alveoli located in the body?
end of bronchial tubes
Pulmonary alveolus
https://en.wikipedia.org/wiki/Pulmonary%20alveolus
A pulmonary alveolus (plural: alveoli, from Latin alveolus, "little cavity") also known as an air sac or air space is a hollow cup-shaped cavity found in the lungs where gas exchange (the exchange of oxygen and carbon dioxide) takes place.[1]
Pulmonary alveolus
Alveoli are first located in the respiratory bronchioles that mark the beginning of the respiratory zone.
Pulmonary alveolus
Alveoli are hollow cup-shaped cavities found in the lungs where gas exchange (the exchange of oxygen and carbon dioxide) takes place. Alveoli are first located in the end of bronchial tubes that mark the beginning of the respiratory zone.