Crus Of The Diaphragm High Impact Factor Journals
The crus of diaphragm, refers to one of two tendinous structures that prolong down the diaphragm to the vertebral column. It subsist of right crus and a left crus, which together form a leash for muscular contraction. The crura emerge from the front of the bodies and intervertebral fibrocartilage of the lumbar vertebrae. They are tendinous and integrate with the anterior longitudinal ligament of the vertebral column. The right crus is larger and longer than the left which originate from the front of the bodies and intervertebral fibrocartilages of the upper three lumbar vertebrae. The left crus begin from the comparable parts of the upper two lumbar vertebrae only. The medial tendinous margins of the crura cross anteriorly and medial ward, and join in the middle line to form an arch across the front of the aorta known as the median arcuate ligament; this arch is often poorly defined. The area behind this arch is recognized as the aortic hiatus. The fibers arising from the xiphoid process are very short, and occasionally aponeurotic; those from the medial and lateral lumbocostal arches, and more especially those from the ribs and their cartilages, are longer, and explain marked curves as they ascend and converge to their insertion.
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