Final answer:
A corticospinal tract (CST) lesion can lead to motor deficits, including weakness and loss of fine motor control, on the contralateral side of the body.
Step-by-step explanation:
The corticospinal tract (CST) is a neural pathway that connects the cerebral cortex to the spinal cord and is responsible for generating voluntary movements. A lesion in the CST can result in motor deficits, such as weakness or paralysis, depending on the location and size of the lesion. When the CST is damaged in the spinal cord, it can cause specific motor impairments, known as the SX of CST lesion. These impairments may include weakness, loss of fine motor control, and spasticity on the contralateral side of the body.