Final answer:
The ventral spinal cord primarily transmits motor signals and controls movement from the brain to the body.
Step-by-step explanation:
The ventral spinal cord is responsible for transmitting signals controlling movement from the brain to the body. It contains axons and cell bodies that primarily transmit motor signals. Sensory information from the body to the brain is conveyed mostly through the dorsal spinal cord. The ventral spinal cord plays a crucial role in coordinating voluntary movements.