nervous system nerve cells nerves nerves nerve nerve nerve nervous system neurons nervous system nerve cells nerve synapse How Nerves Work How Nerves Work nerve endings nerve nerve nerves Nerves nerve nerve nerve nerves nerve nerve nerve How Nerves Work nerves nerve nerves nerve cells nerve nerve nerve nerve neurons nerve damage nerve nerve nerve nerves nerve nerves motor and sensory nerves nerve nerve nerve nerve nerves nerve nerve How Nerves Work nerves motor and sensory nerves nerve nerves nerve nerves neurons neurons