Ascending Tracts

Question 1

Unconscious proprioception. Essential for posture and coordination

Location Lateral column

Origin GTO, Muscle spindle, Joint Receptor
Decussation None
Destination Cerebellar paleocortex

Answer 1

Dorsal and Ventral Spinocerebellar Tract

Question 2

Deep and chronic pain

Location Anterolateral column

Origin Deep somatic structures
Decussation Most immediately cross after origin
Destination Reticular formation, Brainstem, Periaqueductal Gray, Intralaminar Nuclei Thalamus

Answer 2

Spinoreticular Tract

Question 3

Anterior: crude touch, pressure
Lateral: pain, temperature

Location Anterior and Lateral column

Origin Free nerve endings
Decussation: 1-2 levels above Destination BA 3,1,2

Answer 3

Anterolateral Spinothalamic Tract

Question 4

Fine touch, conscious proprioception,
2-point discrimination, vibratory sense

Location Posterior column

Origin: Meissner Corpuscles, Pacinian Corpuscles, Muscle Spindles, and GTO
Decussation: Lemniscal sensory decussation
Destination: BA 3,1,2

Answer 4

Dorsal Column Medial Lemniscus