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As an example, a clinical case of ‘replacement of nerves’ to a patient whose nerve from the spinal cord to the brachial muscle is cut off because of an accidental injury of spinal cord is known.
Then, a part of intercostal nerves ( governed by a respiratory muscle ) was transplanted into the musculo-cutaneous nerve of the brachial muscle.
First, the arm moved together with the respiration, soon the person could voluntarily move the arm namely bend the elbow independently of respiration.
