12/02/2015

Question 0

What spinal level innervates the front and back of the neck?

Answer 0

C3

Question 1

What spinal level innervates the back of the head?

Answer 1

c2

Question 2

How do you tell that a stroke is in the brain stem and not the brain?

Answer 2

Specific Cranial nerve symptoms (symptoms that can only be due to cranial nerves, not the brain): eg double vision, sensory damage limited to trigeminal nerve, total deafness in an ear, nystagmus, spasticity or wasting on one side of the tongue.

Limb problems on ones side, with cranial nerve problems on the other side means: brainstem

Question 3

Where does the pyramidal tract decussate?

Answer 3

Right at the bottom of the brain stem.

Question 4

In general, if there is a lesion in the upper brainstem, what types of cranial nerve symptoms do you get?
In the lower brainstem, what types of symptoms do you get?

Answer 4

Upper brainstem lesions: double vision

Lower brainstem lesions: swallowing problems.