The ____ are the part of the respiratory tree to which the alveoli are attached.

A) bronchioles
B) alveoli
C) pleura
D) epiglottis
E) capillaries

Respiratory Tree

Refers to the branching system of airways in the human body, including the trachea, bronchi, and bronchioles, through which air travels during respiration.

Bronchioles

The small airways in the lungs that lead from the bronchi to the alveoli, playing a crucial role in the process of gas exchange.

Alveoli

Tiny air sacs within the lungs where the exchange of oxygen and carbon dioxide takes place.