What does the word thorax mean?
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The chest, the upper part of the trunk between the neck and the abdomen; it is formed by the twelve dorsal vertebrae, the twelve pairs of ribs, the sternum, and the muscles and fasciae attached to these; below it is separated from the abdomen by the diaphragm; it contains the chief organs of the circulatory and respiratory systems, as distinguished from the abdomen which encloses those of the digestive apparatus.
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[ Greek] The chest; the bony cage made of the ribs, sternum, and twelve thoracic vertebrae, enclosing the heart, lungs, and mediastina. The t. is divided into regions, viz.: anteriorly, Supraclavicular, above the clavicles, Suprasternal, above the sternum, Clavicular, corresponding to the clavicles, Sternal, corresponding to the sternum, Mammary, extending from the third to the sixth rib, and Inframammary, from the sixth rib to the free border of the ribs; posteriorly, the Scapular, corresponding to the scapulae, Interscapular, between, and Infrascapular, below, the scapulae; and laterally, the Axillary, above the sixth rib, and Infra-axillary, below it.
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Usage examples for thorax
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She is grey, modestly adorned on the thorax with two black ribbons and on the abdomen with two stripes in which white specks alternate with brown. – The Life of the Spider by J. Henri Fabre
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Air entering the thorax must on this account pass into the lungs. – Physiology and Hygiene for Secondary Schools by Francis M. Walters, A.M.
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