n17 cranial nerve nuclei - sensory

Question 1

what is the trigeminal sensory nuclei made up of?

Answer 1

• mesencephalic nucleus (proprioception info/ jaw jerk)
• principal nucleus (disc touch vibration)
• spinal nucleus (pain, temp - esp caudalis)

Question 2

which nucleus is associated with taste?

Answer 2

nucleus of tractus solitarius

Question 3

which nerves innervate the tongue?

Answer 3

• ant 2/3 tongue ; VII
• post 1/3 tongue ; IX
• epiglottis ; X
• carotid bodd ; IX

Question 4

which cranial nerves carry some sensory info from the ear into the trigeminal spinal nucleus?

Answer 4

7,9,10

Question 5

does V supplies all three nuclei

Answer 5

true

Question 6

the muscles of facial expression have two nerve supplies from cortex, elabaorate

Answer 6

upper motor neurone

lower motor neurone

Question 7

lower motor neuron supplies same side of face?

Answer 7

a lesion in the left facial nerve will result in the left side upper and lower weakness

Question 8

what does a lesion in the upper motor neuron cause?

Answer 8

opposite side lower face weakness? not sure

Question 9

what is bells palsy?

Answer 9

right sided facial paralysis - lower motor lesion same side (upper and lower face)

Question 10

what are the components of the glossopharyngeal?

Answer 10

• inf salivatory (parasymp)
• solitary n. - taste
• commissural - visceral
• trigeminal spinal nucleus
• nucleus ambiguus (branchiomotor)

Question 11

list the components of the vagus nerve?

Answer 11

• Dorsal motor (parasymp)
• nucleus ambiguus (branchiomotor)
• solitary - taste
• commissural - visceral
• trigeminal spinal nucleus