The term "aponeurosis of insertion" refers to a thin, flat tendon-like structure that attaches muscles to bones. The phonetic transcription for this term is /əˌpɒnɪˈrəʊsɪs əv ɪnˈsɜːʃən/. It is spelled this way because the word "aponeurosis" comes from the Greek word "aponeurōsis", which means "a flat sheet". The "of insertion" part refers to where the aponeurosis is inserted, which can vary depending on the specific muscle and bone involved. Overall, this term is important in understanding the anatomy of the human body and how muscles attach to bones.
Aponeurosis of insertion refers to a broad, flat, and fibrous sheet-like tendon that attaches muscles to bones or other structures. It serves as a strong connective tissue connecting the muscle to its designated insertion point. The term "aponeurosis" specifically refers to a type of tendon that is thin and sheet-like, rather than round or rope-like.
The aponeurosis of insertion plays a crucial role in the transfer of forces generated by the muscle to the bone or structure it attaches to. This transfer of force enables the muscle to exert tension and movement, facilitating various bodily functions. The fibrous nature of the aponeurosis allows for durability and strength, ensuring the stability and integrity of the muscle-bone connection.
The aponeurosis of insertion is present in various regions of the body, particularly where muscles require a broad attachment surface. Common examples include the aponeurosis of the abdominal muscles, which attach to the linea alba (a fibrous structure in the midline of the abdomen), and the aponeurosis of the lumbar region, which attaches to the lower back vertebrae.
Overall, the aponeurosis of insertion is an essential structural component acting as a transition point between muscle tissue and the bony skeleton or other structures. This connectivity allows for efficient muscle function and movement, providing stability and support to the body during various physical activities.
A tendinous sheet serving for the insertion of a broad muscle.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.