Descending Tracts

Multiple Choice

Descending tracts

A) include the corticospinal tract.
B) contain axons of upper motor neurons that cross over to the other side of the spinal cord.
C) include the extrapyramidal tracts, which are involved in unconscious control of motor function.
D) contain upper motor neurons that modulate the activity of lower motor neurons.
E) have all of these properties.