Labels:daily | hakham OCR: DIAPHRAGM OUR DIAPHRAGM is a dome shaped sheet of muscle that separates your chest from your abdomen. As the diaphragm contracts and flattens, the volume of the chest increases and drawn into the lungs A s relaxes. the dome pushes upward, forcing air out of the lungs. Unlike most of the m uscles that move your bones, your diaphragm contracts without your voluntary control This because the thole process breathing happens automatically. contro hole