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Unformatted text preview: on their shin and asks the patient to straighten their knee. Diagram and explain how the musculoskeletal system at the knee is a lever system that amplifies extension velocity. Indicate muscle (M), joint (J) and load (L). Is the rectus femoris muscle involved? 3. After a jump, Molly lands on the ground on her feet, her knees flex and then she extends his legs to make another jump. With regards to her quadriceps muscles, explain when in this motion there are isometric, concentric and eccentric muscle actions. We only want 3 sentences here....
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