The Diaphragm Muscle Function

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The Diaphragm muscle form and its function
Summary;
This essay is established or focused on the main respiratory muscle and its function. The diaphragm muscle is a skeletal muscle, which is a large flat, or the dome-shaped sheet of muscle of the body. It separates the lungs from the stomach area, or the thoracic and abdominal cavities from one another, that is used for breathing. Also, the main function occurs during breathing. It reduces intrathoracic pressure and contracts to enlarge the thoracic cavities. This process occur under involuntary control. Because the brain just works without thinking about it, but able to learn to manage its movements. Sometime it called thoracic diaphragm that is a combination of tendon and muscle, which allows
However, it separates the abdominopelvic and thoracic cavities from one another, and a major muscle used in breathing. It also contraction expands the thoracic cavity and the compresses abdominopelvic cavity. The diaphragm superior origin continues from the xiphoid process, cartilages of ribs, four to ten and anterior to the surface of lower six costal cartilages of the thoracic, and posteriorly the first to third surface of lumbar vertebrae. Although, it innervated by phrenic nerve that separates from the fiber of the cervical third to cervical fifth. The diaphragm muscle has several opening between thoracic and abdominal cavities. There are three major openings and five minor openings. The major openings are aortic hiatus, esophageal hiatus, and vena cava foramen. These three major opening have different structures. The first aortic hiatus allows the aorta, azygos vein and thoracic duct. The second major opening or esophageal hiatus contains esophagus, esophageal arteries as in the ventral and dorsal vagal trunks. The third and final major opening is vena cava foramen, which contains lower vena cava and some other parts of the right phrenic nerve. Although, diaphragm has five minor opening. Those are the smaller aperture of the right crus and left crus. The right crus contains the bigger and smaller right splanchnic nerves, and the smaller aperture of the left crus contains the bigger and smaller left splanchnic nerves, and hemizygous vein. According a video, the right crus is larger and longer than the left crus. Also, sympathetic trunk moves back of the diaphragm below the medial limbo costal arches. Moreover, the foramen of Morgagni that place in the areolar tissue between the sternal end costal branches of the diaphragm allows the upper epigastric part of the internal thoracic artery, and lymphatic of the stomach layer, which place on the convex area of the liver and the central and distal elbow

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