Which suffix indicates the process of breaking down?

The suffix that indicates the process of breaking down is indeed -lysis. This term is derived from the Greek word "lysis," meaning to loosen or break apart. In medical terminology, it is frequently used to describe processes such as the destruction or dissolution of cells, tissues, or substances within the body. For example, terms like "hemolysis" refer to the breakdown of red blood cells.

The other suffixes serve different purposes in medical language. The suffix -ectomy refers to the surgical removal of a structure or tissue, such as in an appendectomy where the appendix is removed. The suffix -tripsy pertains specifically to the crushing of a structure, often used in terms like "lithotripsy," which refers to the fragmentation of kidney stones. Lastly, -gram signifies a recording or a written picture, often associated with imaging techniques or tracing results, such as in "electrocardiogram," which is a record of the electrical activity of the heart. Understanding these distinctions helps clarify why -lysis is the correct choice for indicating a breakdown process.