Which term refers to something concerning the diaphragm?

The term that refers to something concerning the diaphragm is "phrenic." This term is derived from the Greek word "phren," which means diaphragm or mind, but in the medical context, it specifically relates to the diaphragm muscle. The phrenic nerve, for example, is essential for breathing as it innervates the diaphragm, allowing for its contraction and relaxation during the respiratory cycle.

Pneumatic refers to air or gases, often in relation to machinery or processes involving air pressure, rather than specifically to the diaphragm. Psychotic pertains to a state of mental illness or severe psychological disorder and does not relate to anatomical structures like the diaphragm. Pulmonary refers specifically to the lungs and respiratory system, so while it is related to breathing, it does not specifically address the diaphragm itself.