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Thorax 2
 

Thorax 2

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    Thorax 2 Thorax 2 Presentation Transcript

    • The thorax The thorax (or chest) is the region of the bodybetween the neck and the abdomenDivided into :-Thoracic wallThoracic cavity
    • Thoracic wall• Thoracic wall is formed by :- posteriorly by the thoracic part of the vertebral column anteriorly by the sternum and costal cartilages laterally by the ribs and intercostal spaces superiorly by the suprapleural membrane inferiorly by the diaphragm, which separates the thoracic cavity from the abdominal cavity• Covered from out side by muscles and skin
    • Sternum• The sternum lies in the midline of the anterior chest wall.• It is a flat bone that can be divided into three parts:• manubrium sterni,• body of the sternum,• xiphoid process
    • Ribs• There are 12 pairs of ribs, all of which are attached posteriorly to the thoracic vertebrae The ribs are divided into three categories :- True ribs: The upper seven pairs are attached anteriorly to the sternum by their costal cartilages False ribs: The 8th, 9th, and 10th pairs of ribs are attached anteriorly to each other and to the 7th rib by means of their costal cartilages and small synovial joints. Floating ribs: The 11th and 12th pairs have no anterior attachment
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