Brainstem nuclei lesions Flashcards Preview

Stephens Brainstem Lesions > Brainstem nuclei lesions > Flashcards

Flashcards in Brainstem nuclei lesions Deck (15):
1

lesion in: Motor Nucleus of V

Ipsilateral paralysis and atrophy of the muscles of mastication; diminished jaw- jerk reflex

2

lesion in: Motor Nucleus of VII

Ipsilateral facial palsy; loss of corneal reflex

3

lesion in: Nucleus Ambiguus

Dysarthria, dysphagia, hoarseness,

Deviation of the uvula away from the affected nucleus

4

lesion in: Edinger-Westphal Nucleus

Pupillary dilation and difficulties in accommodation

5

lesion in: Superior Salivatory Nucleus

Ipsilateral loss of lacrimation from the lacrimal gland

6

lesion in: Dorsal Motor Nucleus of X

Transient parasympathetic deficits

7

lesion in: Oculomotor Nucleus

External strabismus, complete ptosis

8

lesion in: Trochlear Nucleus

Gaze of the contralateral eye is directed down and out. Because the trochlear nerve completely decussates before leaving the midbrain, the head tilts towards the side of the affected nucleus.

 

this means if the lesion is on the right, the affected eye is on the left, and they will tilt down toward the right 

9

lesion in: Abducens Nucleus

Ipsilateral paralysis of lateral gaze; internal strabismus

10

lesion in: Hypoglossal Nucleus

Ipsilateral paralysis and atrophy of the intrinsic muscles of the tongue

Protruded tongue deviates towards the side of the affected nucleus

11

lesion in: Mesencephalic Nucleus of V

Ipsilateral loss of proprioception from 1⁄2 of the head; diminished jaw jerk reflex

12

lesion in: Main Sensory Nucleus of V

Ipsilateral loss of fine proprioception and two-point tactile discrimination from 1⁄2 of the face

13

lesion in: Descending Nucleus of V

Ipsilateral loss of pain and temperature sensations from 1⁄2 of the face

14

lesion in: Solitary Nucleus

Ipsilateral loss of taste sensations from the tongue and oropharynx; diminished or absent visceral pain sensations or reflexes from the ipsilateral palate and pharynx

15

lesion in: Vestibular Nuclei

Problems with equilibrium and posture; nystagmus