Brainstem and cranial nerve nuclei

Question 1

Which CN carry sympathetic fibres?

Answer 1

III, VII, IX, X

Question 2

What are the somatic motor CN nuclei?

Answer 2

III, IV, VI, XII

Question 3

What are the special visceral efferent nuclei?

Answer 3

V, VII, nucleus ambiguous

Question 4

What fibres does the nucleus ambiguous give rise to?

Answer 4

Branchial efferent fibres of IX, X, XI

Question 5

What are the visceral efferent (parasympathetic) nuclei?

Answer 5

Edinger Westphal, superior and inferior salivatory nuclei, dorsal motor nucleus of X

Question 6

What does the Edinger-Westphal nucleus transmit?

Answer 6

Parasympathetic pre-ganglionic fibres of III to the eye

Question 7

What do the superior and inferior salivary nuclei transmit?

Answer 7

Superior = VII - sublingual and submandibular gland.
Inferior = IX - parotid gland

Question 8

What are the general somatic afferent nuclei?

Answer 8

Mesencephalic root of V, chief sensory nucleus of V, spinal root of V

Question 9

What does the mesencephalic root of V transmit?

Answer 9

Proprioceptive information from V

Question 10

What does the chief sensory nucleus of V transmit?

Answer 10

Touch from face

Question 11

What does the spinal root of V transmit?

Answer 11

Pain and temperature from the face

Question 12

What are the special somatic afferent nuclei?

Answer 12

Cochlear nucleus

Vestibular nucleus

Question 13

What does the cochlear nucleus transmit?

Answer 13

Auditory fibres from VIII

Question 14

What are the visceral afferent nuclei?

Answer 14

Nucleus of solitary tract

Question 15

What does the nucleus of solitary tract transmit?

Answer 15

Fibres from VII, IX, X

Question 16

What does the nucleus of III send fibres to innervate?

Answer 16

Superior, inferior and medial rectus, inferior oblique, levator palpabele superioris

Question 17

What does IV innervate?

Answer 17

Superior oblique

Question 18

What does VI innervate?

Answer 18

Lateral rectus

Question 19

What does XII innervate?

Answer 19

Muscles of the tongue

Question 20

What does V innervate (motor)?

Answer 20

Muscles of mastication, tensor tympani, tensor palatine, mylohyoid, anterior digastric

Question 21

What does VII innervate?

Answer 21

Muscles of facial expression, posterior digastric, stylohyoid, stapedius

Question 22

What does fibres from nucleus ambiguous innervate?

Answer 22

Skeletal muscles of pharynx, larynx, soft palate

Question 23

What does Edinger-Westphal fibres innervate?

Answer 23

Parasympathetic fibres of III - sphincter pupilliae

Question 24

What does the superior salivatory nucleus innervate?

Answer 24

Submandibular, sublingual and lacrimal glad (VII)

Question 25

What does the inferior salivatory nucleus innervate?

Answer 25

Parotid gland (IX)

Question 26

What dot he fibres from nucleus of solitary tract innervate?

Answer 26

VII - taste from anterior 2/3 of tongue
IX - taste from posterior 1/3 of tongue
X - taste from epiglottis

Question 27

What is the mesencephalic nucleus of V responsible for?

Answer 27

Proprioception from face

Question 28

What is the chief sensory nucleus of V responsible for?

Answer 28

Touch from the face

Question 29

What is the spinal root of V responsible for?

Answer 29

Pain and temperature from the face