Neurology Anatomy

Question 1

The Somatic Pathway is made up of three neurones. Describe the pathway of the first order neurone

Answer 1

Projects from PNS into CNS
Cell body in DRG
Synapses at Medulla or Spinal Cord

Question 2

The Somatic Pathway is made up of three neurones. Describe the pathway of the second order neurone

Answer 2

Cell body in medulla of brainstem

Decussates and projects to thalamus

Question 3

The Somatic Pathway is made up of three neurones. Describe the pathway of the third order neurone

Answer 3

Cell body in thalamus, distributed by the homuncular pathway, projects to Post Central Gyrus

Question 4

What sensory features is the DCML pathway responsible for?

Answer 4

Vibration
Proprioception
Fine Touch
Two Point Discrimination

Question 5

What fasciculus is above and below T7 in DCML?

Answer 5

Cuneate above

Gracile below

Question 6

Describe the DCML pathway

Answer 6

First order neurone ascends and then synapses in medulla

Lower body axons run most medially

Question 7

What sensory features is the Spinothalamic Pathway responsible for?

Answer 7

Temperature
Pain
Pressure

Question 8

Describe the Spinothalamic pathway

Answer 8

1st order neurone synapses at level of entry

Lower body axons run most laterally