What does the term 'cardiac' relate to?

The term 'cardiac' specifically relates to the heart. This term is derived from the Greek word "kardia," which means heart. In medical terminology, any condition, treatment, or part of the anatomy involving the heart will typically have the prefix "cardio-" or the adjective "cardiac." For example, conditions such as cardiac arrest refer to the heart's sudden inability to function, while terms like cardiac output measure how much blood the heart pumps in a specific time frame. Understanding this terminology is crucial for those studying the cardiovascular system and its implications in health and disease.