Carbon dioxide gas (CO2) is a product of metabolism occurring in the human body. Formed in tissue cells gas moved by diffusion in the tissue capillaries. Once in the erythrocytes, the carbon dioxide gas comes into chemical interaction with water, and the result is carbonic acid. This reaction is catalyzed by carbonic anhydrase - specific enzyme, which is deployed only in the red blood cells. In plasma it is not.The reaction occurring in the erythrocytes, does not allow the concentration of carbon dioxide gasand in these cells to reach high numbers. As a result, in the red blood cells are constantly new molecules diffuse gas. Osmotic pressure within blood cells increases and with it increases the water content. This leads to the increase in the volume of red blood cells.Changes in cells lead to the emergence of "Haldane effect". The essence of the effect that the binding of oxygen to hemoglobin displaces from the blood of carbon dioxide. This is essential in the transport of carbon dioxide from the tissues to the lungs. Transport of carbon is in the form of salts bicarbonates.To carbonic acid is turned into bicarbonate, essential potassium ions. Their source is hemoglobin.As a result of these chemical reactions in tissue capillaries increasing the amount of carbon dioxide gasin the form of potassium bicarbonate. In this way it is easier to transport to the lungs.In the capillaries of the pulmonary circulation, the concentration of carbon dvuokisi low. He split off CO2. At the same time, oxyhemoglobin is formed. It displaces bicarbonate from potassium ions. In red blood cells carbonic acid is split into CO2 and water. Carbon dioxide gas is derived from pulmonary alveoli during the process of exhalation.
Advice 2: Where to go in Vienna
Vienna – the Austrian capital with magnificent palaces, majestic cathedrals, huge squares, and countless monuments, gorgeous parks and wide avenues.
Vienna is rightly considered the capital of classical music, because here was born the famous composers of all time. Vienna state Opera opened in 1869, is one of the five best Opera houses in the world.Interesting and favorite tourist attraction in Vienna is the Hundertwasserhaus, named for its architect. Built by order of the city government, this building has proved the possibility of the connection of style and reality. The randomness of the location of the Windows in this building can not be overlooked. Hundertwasser argued that the main in the house are Windows, not walls, but if they are all the same – reminiscent of a concentration camp.In the heart of Vienna in the castle of Duke Albrecht is a unique Museum Albertina. It contains the world's largest collection of graphics from the late Gothic to the present (approximately 65 000 drawings).The historical centre of the capital is the Imperial Palace, which served as the Imperial residence until 1918. Built as a medieval castle, over the centuries he appeared, a huge Palace ensemble, combining several palaces, a temple with crowns of Emperors, a number of museums, the chapel and the arena, where a trotting horse of the Spanish riding School.Very interesting and "Swiss court", is located in Vienna. It is named in honor of the "Swiss guard", personally guarding the Empress Maria Theresa. This part of the Hofburg was built in 1553 in Italian Renaissance style. Since the middle ages holds the items that makes even inveterate skeptics believe in a fairy tale: the magic spear, a magic scrip, the millennial crown and the relics of various saints. These and other relics can be admired in the Treasury of the Hofburg, located on the right side of the Swiss court.Over treasure is the above mentioned famous chapel (Burgkapelle), in which on a regular basis, the Vienna boys ' Choir, founded in 1498 for the entertainment of the Imperial family. Modern Vienna performances of this song of the band accessible to the masses, and practically all tourists visit the concerts of this Choir.Attractions in Vienna so much that they are impossible to describe in one article. Beautiful parks, theatres and cinemas, numerous monuments, museums and exhibitions – every visitor will find here something that will have appealed to him.