A Review of Structure and Biomechanics of the Skeletal Muscle

골격근의 구조와 생역학에 관한 고찰

  • Gong, Won-Tae (Physical Therapy, Department of Rehabilitation Science, Graduate School, Daegu University)
  • 공원태 (대구대학교대학원 재활과학과 물리치료)
  • Published : 2007.06.30

Abstract

The purpose of this study is to understand the structure and biomechanics of the skeletal muscle. The skeletal muscle takes 40 to 45% of the whole body. Stable posture requires a balance of muscle. However, when the muscle strength is unbalanced, movement initiates. The power generated by the muscle is a primary means to adjust the equilibrium of posture and movement. The structural unit of the skeletal muscle is a long cylindrical type muscle fiber which contains hundreds of nucleus. The thickness of muscle fiber is about $10-100{\mu}m$, and its length is about 1-50cm. Muscle fiber is composed of myofibril that is covered with plasma membrane which is called sarcolemma. In understanding the movement of human body, it is important to comprehend the movement of bone and joint and the tension of muscle. Understanding the structure and biomechanics of muscle also provides basic information on clinical treatment of patients.

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