The superior vena cava (SVC) is the superior portion of the two vena cava, the great vena cava that carries deoxygenated blood from the systemic circulation back to the right atrium of the heart. This is a short vein with a large diameter (24 mm) that receives a venous return from the upper half of the body, above the diaphragm.
The superior vena cava returns from the lower half, below the diaphragm, through the inferior vena cava. The SVC is located in the right anterior mediastinum. [1] This is the typical location for central venous access through a central venous catheter or a central catheter inserted peripherally. Mentions of "la cava" without any other specification usually refer to SVC.
The free radical theory statutes that <em>ageing is the result of the accumulation of the damage to cells and tissues caused by reactive oxygen species</em> as a result of aerobic metabolism.
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Edwin Sutherland would consider 'group association' as the underlying cause of deviance.
<u>Explanation:
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In the discipline of criminology, the concept of 'group association' is deemed to be utterly important. It is so because 'group association' has been observed to be a major cause behind most criminal activities that take place.
The influence that is evident on members of certain groups due to the ideology they bear is often the reason behind individuals who come in contact with such groups becoming criminals.
The belief that there is an empirical reality, but that our understanding of it is limited by its complexity and by the biases and limitations of researchers is called Postpositivism. Basic science is the effort to figure out what the world is like and why it works as it does.
