Tuesday 27 April 2010

Transportation Of Oxygen and Carbon Dioxide











2.3 Explain The Transport Of Oxygen and Carbon Dioxide In The Blood
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The transport of oxygen and carbon dioxide is done via the cardiovascular system, capillaries, veins, arteries and vessels and also with help from red blood cells. To start with the blood is oxygenated in the lungs, the process of this taking place is as follows.
The right ventricle in the heart sends blood that is de - oxygenated to the lungs, in the lungs the carbon dioxide releases out of the blood and into the lungs and the oxygen that we breath in then combines with the haemoglobin in the blood, it then passes through the lung capillaries. From this the oxyhaemoglobin then goes to the heart this is done via way of the pulmonary vein, it then enters the systemic circulation by the aorta.
In our body tissue there is a low amount of oxygen, it also contains products that are waste, this being carbon dioxide. Due to the high amount of oxygen in the blood and the ow amount in the tissue, the high amount of carbon dioxide in the tissues breaks down into the blood plasma. Finally the blood from the tissues go back to the heart by way of the superior vena cava and the inferior vena cava, the process then stars again.
Overall there is several major parts of our system involved in this process and without each linking to each other via veins, capillaries, vessels and arteries the process wouldn't be able to take place.

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