Because the stretch reflexes can be traced back along certain
spinal nerve routes, a. they are not used in diagnosis of brain
potential brain damage. b. they are only useful for diagnosis if
there has been damage to the spinal cord. c. it is possible to
determine what level of the spinal cord may have been damaged. d.
they are only when diagnosing problems in the extremities.
e. they are only if the patient is conscious.