Unit IV – The Thoracic Cage/ Respiration & Breathing

Unit IV – The Thoracic Cage/ Respiration & Breathing. ... is the flat, elongated bone that forms the midline of the anterior thoracic cage. It has 3 parts: the manubrium , the body, and the xiphoid process. ... Many important nerve trunks and blood vesselts pass across rib 1 on the way to the arm. Ribs 11 and 12 are short, floating ribs that ... ................
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