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.
GROSS ANATOMY OF LUNGS Lungs are a pair of respiratory organs situated in a thoracic cavity. Right and left lung are separated by the mediastinum. Texture-- Spongy Color â Young â brown Adults -- mottled black due to deposition of carbon particles Weight-Right lung - 600 gms Left lung - 550 gms