Major Pathways

Question 1

Medial Leminscus

Answer 1

• prop/vib/2pt tact from opp 1/2 bosy

- at upper pons & midbrain also has i/l tongue and pharynx info

Question 2

Trigeminal Lemniscus

Answer 2

• p/T/crude tactile from opp 1/2 face

- btwn ML and SL

Question 3

Lateral Lemniscus

Answer 3

• b/l auditory, mostly from opp ear

- @ lateral aspect of brainstem

Question 4

Medial Longitudinal Fasciculus

Answer 4

• vestibular info to CNs III, VI, and IV
• contain occulomotor system
• next to midline & ant to central gray

Question 5

Corticospinal Tract

Answer 5

• descending motor info

- forms pyramids in medulla

Question 6

Corticobulbar Tract

Answer 6

• fibers innervate brainstem CN motor nuclei
• u/l lesion = denervation below level
• i/l lesion = contralateral supranuclear facial palsy

Question 7

Spinal Lemniscus

Answer 7

• p/T from opp 1/2 body

- lat or post to ML