How long are skeletal muscle cells?
Muscles play four important roles in the body: 1. Produce Movement Mobility of the body as a whole reflects the activity of skeletal muscles, which are responsible for all locomotion and manipulation. 2. Maintain Posture Skeletal muscles work almost continuously, making one tiny adjustment after another to hold the body’s posture, despite the never-ending downward pull of gravity. 3. Stabilizing Joints As skeletal muscles pull on bones to cause movements, they also stabilize the joints of the skeleton. Muscle tendons are extremely important in reinforcing and stabilizing joints that have poorly fitting articulating surfaces, such as the shoulder joint. 4. Generating Heat Skeletal muscles generate body hear as a by-product of their activity. As ATP is used to power muscle contraction, nearly three-quarters of its energy escapes as heat. This heat is vital in maintaining normal body temperature. Since skeletal muscle accounts for at least 40% of body mass, it is the muscle type most resp
