Inspiratory Muscle Anatomy Case Study

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Inspiratory Muscles Anatomy The effects of warm up on skeletal muscles have been widely researched over the years. However, the inspiratory muscles received less attention in terms of studies regarding its effects on athletic performance. The inspiratory muscles are muscles involved in the breathing mechanism. These muscles include the diaphragm, intercostal muscles, levatores costorum and the serratus posterior superior (Palastanga and Soames, 2012). However, there are other muscles that assist in increasing the thoracic dimensions in the case of extreme respiratory distress in an attempt to draw more air into the lungs. These muscles are referred to accessory muscles of respiration. They include serratus anterior, sternocleidomastoid, scalenes, subclavius, pectoralis major and pectoralis minor. The diaphragm plays the key role in inspiration. It is a…show more content…
It attaches around the thoracic outlet, which converges into a central trefoil-shaped tendon. The lumbar part of the diaphragm arises from two crura which attach to the anterolateral aspects of the bodies of the lumbar vertebrae. The two crura are connected by the median arcuate ligament in front of the body of T12. The remainder lumbar part of the diaphragm attaches from the medial and lateral arcuate ligaments which are lateral to the crura. The medial arcuate ligament is a thickening of the fascia covering psoas major and originates from the side of the body of L2 and inserts at the transverse process of L1. The lateral arcuate ligament is a thickening of the anterior layer of the thoracolumbar fascia covering quadratus lumborum. It originates from the transverse process
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