You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The length of a muscle at which tension is maximum is called: and explain in detail?
When a muscle at rest is stretched, its sarcomere length is changed. When this muscle is made to contract from the various lengths at rest, contractile force developed varies according to the actin-myosin interaction possible within the sarcomere. Resting length of sarcomere = 2 m. This is Li or length initial. Contractile force increases as muscle length is increased up to a point. Sarcomere length of 2.2 m obtains maximum force of contraction. (Starling's law: Greater the fiber length, stronger will be the contractile force). This is Lo or length optimum. At this length, there is optimum interdigitation between actin and myosin.