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The physiological concept of muscle contraction is based on two variables: length and tension. In physiology, muscle shortening and muscle contraction are not synonymous. Tension within the muscle can be produced without changes in the length of the muscle , as when holding a dumbbell in the same position or holding a sleeping child in your arms. Upon termination of muscle contraction, muscle relaxation occurs, which is the return of muscle fibers to a low-tension state. Learn about skeletal muscles, the most common type of muscle in your body. They connect to bones and allow you to perform various movements and functions. Find out how they look, where they are located and what conditions can affect them. Striated muscle , also known as voluntary or skeletal muscle , is defined as the type of muscle that constitutes the majority of the body's shape and is under voluntary control, characterized by its elongated cells that display distinct striations or stripes. These muscles are capable of generating significant force and maintaining semi-contraction for extended periods, facilitating various bodily functions such as respiration and movement. AI generated definition based on: Bancroft's Theory ... Compared to smooth muscle , striated muscle tissue has more mitochondria. Skeletal muscle cells have several nuclei, whereas cardiac and smooth muscle cells only have one. Function Striated muscular tissue’s primary purpose is to contract and generate force. The heart’s contractions will circulate blood throughout the body.
