Alvéolos

The transcript explains the process of gas exchange between blood and the atmosphere, focusing on the role of alveoli located at the end of pulmonary airways. It describes the structure of alveoli, which are lined with tiny blood vessels and capillaries that expand slightly during inhalation. The transcript concludes by noting that only mammalian lungs contain alveoli.

What occurs between the blood and the atmosphere?

Where are alveoli located in the respiratory system?

What are the characteristics of the capillaries associated with alveoli?

How do alveoli respond during inhalation?

Which type of lungs possess alveoli?