Final answer:
The reticulospinal tract is responsible for facilitating or inhibiting voluntary and reflex activity.
Step-by-step explanation:
The reticulospinal tract is responsible for the facilitation or inhibition of voluntary and reflex activity. This tract connects the reticular system in the brain stem with the spinal cord and influences trunk and limb muscles related to posture and locomotion. It also contributes to muscle tone and influences autonomic functions.