where is the diaphragm located in the human body?
Diaphragm in Respiratory System. The diaphragm in the respiratory system is the dome-shaped sheet of muscle that separates the chest from the abdomen. It is also referred to the thoracic diaphragm because itâs located in the thoracic cavity, or chest. It is attached to the spine, ribs and sternum and is the main muscle of respiration, playing a very important role in the breathing process.