Brainstem Flashcards
Where are the brainstem CN located?
Midbrain 3-4
Pons 5-8
Medulla 9-12
Regarding CN lesions, all the effects are ipsilateral except for which CN?
CN4
Dejerine’s and anterior spinal artery syndrome are 2 examples of _
Medial medullary syndrome
Contralateral UMN signs, tongue deviation to the affected side, contralateral loss of discriminative touch are signs of _
Medial medullary syndrome
PICA and Wallenberg’s are examples of _
Lateral medullary syndrome
The major blood supply to the Pons is _
Basilar artery
The corneal blink reflex tests the integrity of the _
Pons
Lesions of CN6 produce _
Ipsilateral LR palsy
Lesions of CN 6 nucleus produce _
Lateral conjugate gaze towards the damaged side
Damage to the MLF results in _
Ipsilateral MR cannot adduct
Contralateral nystagmus
A peripheral CN7 nerve or nucleus lesion (LMN) results in _
Muscle weakness affecting the upper and lower face
A central CN7 lesion (UMN) results in _
Muscle weakness in the lower face contralateral to the lesion
Bell’s Palsy results from lesion to what neuron innervating the face? What are the findings?
LMN to the face
Ipsilateral drooping of the face
Basal Pontine syndromes result in what CN signs? What body signs?
Ipsilateral CN signs
Contralateral UMN signs for body
Basal pons has the [sensory/motor fibers] while the tegmentum pon has [sensory/motor fibers]
Basal is motor
Tegmentum is sensory
