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countrygal101 countrygal101
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Posts: 592
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6 years ago
What ordinarily prevents extensor muscles from contracting at the same time as flexor muscles?
 
  a. the ligaments and tendons that bind them together
 b. learned patterns of coordination in the cerebral cortex
 c. inhibitory synapses in the spinal cord
 d. control of both muscles by different branches of the same axon
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6 years ago
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