CHAPTER II The Thoracic Type "The Thriller" Individuals in whom the circulatory system (heart, arteries and blood vessels) and the respiratory system (lungs, nose and chest) are more highly developed than any other systems, have been named the Thoracics. This name comes from the fact that the heart and lungs (which constitute the most important organs of these two closely-allied systems) are housed in the thorax--that little room made by your ribs for the protection of these vital organs.
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