Portage Learning A&P 1 - Module 2

Portage Learning A&P 1 - Module 2 Gross Anatomy Study of structures that can be seen with the naked eye Gross Anatomy of the Lungs The right lung has three lobes while the left lung has two lobes. The both lungs have oblique fissures. The right lung also has a horizontal fissure separating the superior and middle lobes hilum the root where the pulmonary blood vessels and veins enter the lung. This is also where the trachea turns into the bronchi. pleura membranes that cover the surface of the lung and the cavity surrounding the lungs parietal pleura covers the surfaces surrounding the lungs: the rib cage, diaphragm, and mediastinum. visceral pleura directly covers the lungs pleural space/cavity The space that is formed between the pleurae. Normally, this space is empty except for a scant amount of fluid. However, in the diseased state, this cavity can fill with air or fluids. anatomical organization of the respiratory system allows the respiratory system to perform three main functions: 1) air conduction, 2) air filtration, and 3) exchange of gases - aka respiration Conducting portion of respiratory system responsible for moving air in and out of lungs. air is filtered so that it is free of debris, warmed, and humidified. By the time the air reaches the lungs, it is at body temperature and saturated with water.