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Median arcuate ligament syndrome results from compression of the celiac artery by the median arcuate ligament. The median arcuate ligament is a fibrous arch formed by the left and right diaphragmatic crura, visible here on the underside of the diaphragm. Specialty: Gastroenterology, Vascular Surgery: Symptoms: Epigastric pain, anorexia, Weight loss
The median arcuate ligament is formed by the right and left crura of the diaphragm. [1] The crura connect to form an arch, behind which is the aortic hiatus, through which pass the aorta, the azygos vein, and the thoracic duct.
The medial arcuate ligament is an arch in the fascia covering the upper part of the psoas major.It is attached to the side of the body of the first or second lumbar vertebra, laterally, it is fixed to the front of the transverse process of the first and, sometimes also, to that of the second lumbar vertebra.
They are tendinous and blend with the anterior longitudinal ligament of the vertebral column. The right crus, larger and longer than the left, arises from the front of the bodies and intervertebral fibrocartilages of the upper three lumbar vertebrae. The left crus arises from the corresponding parts of the upper two lumbar vertebrae only.
The vagus nerve is also responsible for regulating inflammation in the body, via the inflammatory reflex. [7] Efferent vagus nerve fibers innervating the pharynx and back of the throat are responsible for the gag reflex. In addition, 5-HT 3 receptor-mediated afferent vagus stimulation in the gut due to gastroenteritis is a cause of vomiting. [8]
The aorta is situated on the left, the thoracic duct in the middle, and the azygos vein on the right. [1]: 185 The hemiazygos vein may pass through the aortic hiatus [2] or may pass through the diaphragm independently through its own foramen in the left crus.
The arcuate ligament may refer to: Inferior pubic ligament (arcuate ligament of the pubis). Arcuate popliteal ligament. Arcuate ligaments of the diaphragm: Median arcuate ligament; Medial arcuate ligament; Lateral arcuate ligament
The internal arcuate fibers are composed of axons of the gracile nucleus and the cuneate nucleus. The cell bodies of the nuclei lie contralaterally. The medial lemniscus is part of the somatosensory dorsal column–medial lemniscus pathway , which ascends in the spinal cord to the thalamus . [ 1 ]