1. What aspects of somatic sensation do receptors A and B mediate?  
	A.  Vibration sense
	B.  Pain, temperature, itch

2. The marked section is cut through which region of the spinal cord (cervical, thoracic, lumbar, sacral)?
Answer: cervical

3. What is the postsynaptic target of the marked axons? And indicate on which side.
Ans.  Ventral posterior nucleus; contralateral

4. What artery supplies blood to the marked tract?
Ans. Vertebral artery

5. What is the principal location (and laterality) of the cell bodies of axons within the red circle?
Ans. Dorsal horn, contralateral (these are anterolateral system axons)

6. What is the function of the marked region? Hint: The region receives input from the anterolateral system. 
Ans. Pain, temperature, and itch (any one is sufficient)

7. Name one cortical region that receives an input from the nucleus at the tip of the pointer?
Ans. Postcentral gyrus

8. Name a thalamic nucleus that projects to the marked gyrus.
Ans. Ventral posterior (lateral and medial) nucleus 

9. What is the function of the marked tract?
Ans.  mechanosensation

10. This is an MRI; white corresponds to CSF, light to medium gray correspond to gray matter, dark gray, white matter, and black, flowing blood.  
Does the ventral posterior nucleus project to the cortex via region marked A, B, or C?
Ans. C, which is the posterior limb of the internal capsule