Motor Unit 0.0 / 5 ? Physical EducationExercise physiologyA2/A-levelAQA Created by: StephanieCreated on: 28-11-16 08:40 The motor neuron and the group of muscle fibres that it controls Motor unit 1 of 10 Neurotransmitter that allows the transmission of an impulse across the synaptic cleft Acetylcholine 2 of 10 If an impulse is of sufficient intensity (above the threshold) then all the muscle fibres within it will contract All or none law 3 of 10 The interaction of the nervous system with the muscular system Neuromuscular system 4 of 10 An increase in responsiveness of a nerve resulting from the additive effect of numerous stimuli Spatial summation 5 of 10 Gap between motor end plate and muscle fibre Synaptic cleft 6 of 10 Highest level of sustained tension Tetanic contraction 7 of 10 Enlargement of individual muscle fibres associated with resistance training Muscle hypertrophy 8 of 10 The splitting of individual muscle fibres to create new fibres Hyperplasia 9 of 10 Fibres most suited to endurance based events slow twitch 10 of 10
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