Muscular System 0.0 / 5 ? Physical EducationAnatomy & physiologyASAQA Created by: izzybook25Created on: 21-06-18 11:26 What is a tendon? Connective tissue which attaches bone to muscle 1 of 26 What is an agonist? Muscle responsible for creating movement at a joint 2 of 26 What is an antagonist? Muscle that opposes movement of the agonist 3 of 26 What is a fixator? A muscle which stabilizes a joint during movement 4 of 26 What is an isotonic muscle contraction? Contraction where muscle changes length 5 of 26 What are the two types of isotonic muscle contraction? Concentric and Eccentric 6 of 26 What is an isotonic concentric contraction? Muscle shortens to pull two bones closer together 7 of 26 What is an isotonic eccentric contraction? Muscle lengthens to resist force 8 of 26 What is an isometric contraction? When a muscle contracts but doesn't change length 9 of 26 What movement occurs in the foot? Dorsi flexion, plantar flexion 10 of 26 What movement occurs in the knee? Flexion, extension 11 of 26 What movement occurs in the hip? Flexion, extension, adductor, abductor 12 of 26 What movement occurs in the shoulder? Flexion, extension, adduction, abduction, horizontal flexion, horizontal extension 13 of 26 What is a motor unit? Motor neuron is connected to multiple muscle fibres 14 of 26 What is a motor neuron? Specialized cells which transit nerve impulses 15 of 26 What is an action potential? Electrical charge in nerve and muscle cells which carries nerve impulse down the neuron 16 of 26 What is the neuromuscular junction? Where the axon meets the muscle fibre 17 of 26 What does an action potential need to cross a synaptic clef? Enough neurotransmitter 18 of 26 What is the all or nothing law? Muscle contraction will only occur if there is enough neurotransmitter 19 of 26 Name the 3 types of muscle fibre types Slow oxidative, fast oxidative glycolytic, fast gylcolytic 20 of 26 What are some characteristics of a slow oxidative fibre? Slow contraction speed, high aerobic capacity, high fatigue resistance, high capillary density, high myoglobin content 21 of 26 What are some characteristics of a fast oxidative glycolytic fibre? High capillary density, high phosphocreatine stores, fast contraction speed, moderate aerobic & anaerobic capacity, moderate fatigue resistance 22 of 26 What are some characteristics of a fast glycolytic fibre? Low capillary density, high phosphocreatine stores, fast contraction speed, high anaerobic capacity, low fatigue resistance 23 of 26 Give a sporting example of a slow oxidative fibre Marathon 24 of 26 Give a sporting example of a fast oxidative glycolytic fibre 800m 25 of 26 Give a sporting example of a fast glycolytic fibre 100m sprint 26 of 26
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