1 Explain how the structure of different segments of the respiratory airways reflect the functional roles that these airways play in air movement and gas exchange. 2  Distinguish the trachea, bronchi, terminal bronchioles, bronchioles, alveolar ducts, alveolar sacs, and alveoli based on key structural features.he respiratory airways extend from the respiratory bronchioles to the alveoli. 1  The respiratory bronchioles have a diameter of 0.5 millimeters and feature a few alveoli scattered along their walls. 2  The epithelium here remains low cuboidal.
Lily Collins and Chris Evans 'dating and having a lot of fun together since meeting at Oscars after-party'. Lily Collins has been swept off her feet by Captain America. The 25-year-old British beauty is reportedly 'dating' Chris Evans ,33, according to a new report from Us Weekly on Saturday. The new couple first met at the Vanity Fair Oscars party on February 22 and been 'having a lot of fun' together. Scroll down for video.
The female UK model Alexandra Evans is 27 years old (born August 18, 1989). *another source lists her birthday as July 20. 6 people found this useful.