diaphragm – dome-shaped muscle separating the thorax and abdomen that assists in breathing

(Pronounced dye-uh-fram)

(Note: The diaphragm is dome-shaped like a parachute).

To remember the meaning of diaphragm, use the following mnemonic:

She grabbed at the diagram (diaphragm) and used it to build a parachute.

The diaphragm is a large, dome-shaped muscle that separates the thoracic cavity (chest) from the abdominal cavity and plays a crucial role in breathing. It is the primary muscle responsible for ventilation. The diaphragm works automatically without conscious thought, though breathing can be controlled voluntarily. This muscle is essential for life as it enables the continuous exchange of oxygen and carbon dioxide that is necessary for cellular respiration, and its proper function is vital for maintaining adequate oxygen levels in the blood.