Which structure carries motor output from the spinal cord?

Study for the Neurons, Nervous System, and Signal Transmission Test. Use detailed study guides and multiple choice questions with hints and explanations. Prepare effectively for your exam!

Multiple Choice

Which structure carries motor output from the spinal cord?

Explanation:
Motor signals exit the spinal cord along the ventral (anterior) root. The cell bodies of these motor neurons sit in the anterior horn of the spinal cord’s gray matter, and their axons travel through the ventral root to reach muscles via the spinal nerves. Dorsal roots carry sensory information into the cord, and the dorsal root ganglion houses the cell bodies of those sensory neurons. So the ventral root is the pathway for efferent, or motor, output from the spinal cord.

Motor signals exit the spinal cord along the ventral (anterior) root. The cell bodies of these motor neurons sit in the anterior horn of the spinal cord’s gray matter, and their axons travel through the ventral root to reach muscles via the spinal nerves. Dorsal roots carry sensory information into the cord, and the dorsal root ganglion houses the cell bodies of those sensory neurons. So the ventral root is the pathway for efferent, or motor, output from the spinal cord.

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