WebSep 15, 2024 · The air passage now divides into the two bronchi that take the air to the right and left lungs before dividing into smaller and smaller bronchioles that spread throughout the lungs to carry air to the alveoli. Smooth muscles in the walls of the bronchi and bronchioles adjust the diameter of the air passages. WebThe respiratory tract conveys air from the mouth and nose to the lungs, where oxygen and carbon dioxide are exchanged between the alveoli and the capillaries. Passage of air …
Conducting Passages SEER Training - National Cancer Institute
WebPassage of air into the lungs Air enters the body and is warmed as it travels through the mouth and nose. It then enters the trachea. The trachea divides into two bronchi. One … WebMar 24, 2024 · The airways are pipes that carry oxygen-rich air to the alveoli in your lungs. They also carry the waste gas carbon dioxide out of your lungs. The airways include these … irct 30322
Respiratory system structure and function - BBC Bitesize
WebJun 16, 2024 · In the lungs, air is diverted into smaller and smaller passages, or bronchi. Air enters the lungs through the two primary (main) bronchi (singular: bronchus). Each bronchus divides into secondary bronchi, then into tertiary bronchi, which in turn divide, creating smaller and smaller diameter bronchioles as they split and spread through the lung. WebLungs are the primary organs of respiration in humans and other vertebrates. They are located on either side of the heart, in the thoracic cavity of the chest. Anatomically, the lungs are spongy organs with an estimates total surface area between 50 to 75 sq meters. WebNov 25, 2024 · Structures of the respiratory system can be grouped into three main categories: air passages, pulmonary vessels, and respiratory muscles. Examples of respiratory structures include the nose, mouth, lungs, and diaphragm. In the breathing process, air flows into and out of the lungs. Gases are exchanged between the air and … irct 30337