A Laboratory Dog Has Had Surgery to Separate the Spinal

Multiple Choice

A laboratory dog has had surgery to separate the spinal components of its motor system from the cortical and subcortical components. Which of the following best describes the motor abilities of this animal?

A) The dog is able to sit and roll over in response to commands.
B) The dog can move proximal effectors normally, but not distal effectors.
C) The dog demonstrates reflexive withdrawal of its foot in response to sudden stimulation.
D) The dog is completely paralyzed from the neck down.