In computer networks and telecommunications, a dedicated line is a communications connection or other hardware resource dedicated to a certain application or use. This is different than a shared connection such as a telephone network or the Internet.
Carbon dioxide, a waste product of metabolism, travels from the blood to the alveoli, where it can be exhaled. Between the alveoli is a thin layer of cells called the interstitium, which contains blood vessels and cells that help support the alveoli. The lungs are covered by a thin tissue layer called the pleura. The same kind of thin tissue lines the inside of the chest cavity -- also called pleura. A thin layer of fluid acts as a lubricant allowing the lungs to slip smoothly as they expand and contract with each breath.
There are two major types of lung cancer, non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC) . Staging lung cancer is based on whether the cancer is local or has spread from the lungs to the lymph nodes or other organs.tage I: The cancer is located only in the lungs and has not spread to any lymph nodes. Stage II: The cancer is in the lung and nearby lymph nodes. Stage III: Cancer is found in the lung and in the lymph nodes in the middle of the chest, also described as locally advanced disease.