Where is the point of origin for the descending neural pathway that mediates the suppression of pain

A)  midbrain
B)  hypothalamus 
C)  hindbrain
D)  thalamus

Descending Neural Pathway

Neural tracts that carry motor signals from the brain down the spinal cord to the muscles to initiate movement.

Pain

A distressing feeling and emotional reaction linked to real or possible harm to body tissues, or expressed as if such harm has occurred.

Midbrain

A central part of the brainstem involved in functions such as vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.