Saturday, November 22, 2008

The Lymph Most Part Flows From Lungs In

The lymph most part flows from lungs in the right lymphatic channel, only from the top part of the left lung lymph outflow is carried out on left chains of lymph nodes From the bottom shares of both lungs a lymph flows also on the vessels going downwards in leaves of pulmonary sheaves to knot, located in back behind a gullet and a diaphragm. Lungs have parasympathetic, sympathetic and sensitive -. Sensitive lungs occurs mainly for the account nerves. All listed nerves form powerful forward and back pulmonary textures at a root of lungs. Expansion of lungs at a breath is provided with presence of negative pressure in a pleural cavity (2 - 5 mm the item). During reduction of volume of a thorax of an alveolus are fallen down, pressure exceeds them atmospheric and there is an exhalation As a result of pulmonary ventilation - alveolar air is updated. For normal gas exchange it is required, that pressure of oxygen in alveolar air made 110 mm hg, and carbonic acids of 40 mm hg Gas exchange in alveoluses occurs under physical laws of diffusion.