Vertebral Vasculature

Question 1

What supplies the anterior 2/3 of the spinal chord?

Answer 1

The anterior spinal artery

Question 2

Where does the anterior spinal artery branch from?

Answer 2

it branches from the vertebral artery that goes through the transverse foramen.

Question 3

What supplies the posterior 1/3 of the spinal cord?

Answer 3

The posterior spinal artery

Question 4

What does the posterior spinal artery branch from?

Answer 4

The posterior spinal artery brnaches from the PICA

posterior inferior cerebellar artery

Question 5

Explain the motor nerve tract

Answer 5

The motor nerve tract is ipsilateral

Also called the corticospinal tract

it dessucates (crosses) at the brain

Question 6

Exaplain the sensory nerve tract.

Answer 6

It runs ipsilateral

Also called the DCML

(dorsal column medial leminiscus)

Dessucates at the brain

Question 7

Explain the pain and temperature nerve tract.

Answer 7

It is contralateral

Also called the spinothalmic tract

It dessucates immediately