Ascending and Descending spinal cord pathways

1. What spinal cord tracts cross at the brainstem?
2. Which spinal cord tracts cross in the spinal cord?
3. Which spinal cord tracts remain ipsilateral?

Answers:
1. The tracts that cross at the brainstem include the corticospinal tracts (motor) and the dorsal columns (proprioception, light touch, vibration).
2. The tract that crosses in the spinal cord is the spinothalamic tract (pain, temperature).
3. The spinocerebellar tract (unconscious proprioception) remains ipsilateral.