The referenced video gives an awesome insight into the interesting concepts of Muscle Twitch, Tetanus and Summation. It links all mechanisms together in order to provide a thorough understanding about the essential working of skeletal muscle! Timeline: 00:08 Muscle Twitch 00:32 Phases of Twitch - Explanation 01:30 Muscle Twitch and Muscle Contraction 01:46 Graded Muscle Response 02:00 Wave Summation 02:50 Incomplete Tetanus 03:30 Complete Tetanus