Answer to Question #304833 in Biology for Rookie

Question

Answer in brief but concise

1.Name in order the passage of air from the environment to the lungs.

2.Describe the process of gas exchange between the blood and alveoli of the lungs.

Answer 1

1. When you inhale through your nose or mouth, air travels down the pharynx (back of the throat), passes through your larynx (voice box) and into your trachea (windpipe). Your trachea is divided into 2 air passages called bronchial tubes. One bronchial tube leads to the left lung, the other to the right lung.
2. During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.