KINE 3030 Lecture Notes - Lecture 11: Skeletal Muscle, Myocyte, Motor Unit
20 Feb 2019
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Biomechanics of human skeletal muscle: extensibility: ability to stretch/ increase length, elasticity: ability to return to normal/ resting length, parallel elastic component: elastic structures in muscle don"t pass through contractile component. They surround the elastic component and not affected by cross bridge components: series elastic component: only stretched when cross bridge is present. More fibres on motor unit= more control on muscle. Fast twitch motor units generate more force; slow twitch takes longer to peak because takes: irritability: ability to respond to stimulus, ability to develop. Muscles are made of groups of muscle fibres. Fibres architecture is the relationship between the muscle fibre. Fibres are bunched into their motor units; a motor unit is a motor neuron and all of the muscle fibres it innervates longer to go off. The function of skeletal muscle is to change length with muscle tension.
