Contraction of muscle results in movement because ________.
A) at a joint, the bone acts as a pulley and the joint serves as a lever
B) at a joint, the bone acts as a lever, the joint serves as a fulcrum, and effort is generated by muscle attached to bone
C) at a joint, the bone acts as a fulcrum and the joint serves as a pulley
D) at a joint, the bone acts as a fulcrum and the joint serves as a lever
Correct Answer:
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B)
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B)
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