Sherrington (1947) Surgically Disconnected Spinal Motor Neurons from Cortical and Subcortical

question 57

Multiple Choice

Sherrington (1947) surgically disconnected spinal motor neurons from cortical and subcortical motor centers in laboratory animals. Which of the following statements is true about the subsequent motor behavior of these animals?

• A)The animals could still generate voluntary movements, but reflexive responses were disrupted.
• B)Reflexive responses were intact, but complex voluntary movements were disrupted.
• C)The animals showed normal motor function as long as sensory inputs from the dorsal root were also severed.
• D)The animals became completely motionless and unresponsive to stimulation.

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