Final answer:
If a lateral horn is present, the spinal cord is between T1 - L2.
Step-by-step explanation:
The presence of a lateral horn in the spinal cord indicates that the spinal cord is between T1 - L2. The lateral horn is a region of gray matter that contains cell bodies of motor neurons of the autonomic nervous system. It is only found in the thoracic, upper lumbar, and sacral regions of the spinal cord.