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.
Chris Evans News, Pictures, and Videos. Chris Evans Says He's Never Had a Bad Breakup! Chris Evans is opening up about his past break ups â and the fact that heâs never been through a bad one! âBut Iâve had no bad breakups in my life. Typically, if I see an ex, I give a big hug, and itâs wonderful to catch up,â Chris told Elle.