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PhysioEx Exercise 2 Activity 6 Questions With Correct Solutions, Already Passed!!
What is the key variable in an isometric contraction of a skeletal muscle? - The length-tension 
relationship. 
Based on the unique arrangement of myosin and actin in skeletal muscle sarcomeres, explain why active 
force varies with changes in the muscle's resting length. - When the skeletal muscles resting 
length increases, there is more time for myosin bridges to return to their starting position. 
Note the dip in total force at a muscle length of 90 mm as compared to the total force at a mu...
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