What is the definition of aponeurosis?

Aponeurosis refers to a type of connective tissue that is characterized as being broad and flat, functioning to connect muscles to bones or other muscles. This structure is crucial for facilitating the transmission of force from muscle contractions to the skeletal system, enabling movement. Aponeuroses can be found in several areas of the body, such as the abdominal wall and the scalp, where they serve to stabilize muscles and distribute tension. Understanding this definition is essential, as it differentiates aponeurosis from other types of connective tissue or muscular components, such as tendons, which connect muscles to bones but are generally more cord-like in structure. Recognizing these specific functions and characteristics is vital in the field of anatomy and physiology.