What defines a suture in anatomical terms?

A suture in anatomical terms is defined as a fibrous joint between the flat bones of the skull. Sutures are specialized types of joints that firmly bind the bones of the skull together, providing stability and protection for the brain. Unlike synovial joints, which allow for a range of movements, sutures are immovable and serve a crucial role in maintaining the structure and integrity of the skull throughout a person's life.

During infancy and early childhood, these sutures are flexible and allow for the growth of the skull as the brain develops. Over time, the bones become more tightly interlocked, and the sutures may eventually close, which is a normal part of aging. Therefore, understanding that sutures are specifically fibrous joints highlights their unique characteristics and functions within the skeletal system.