Brainstem and cranial nerve nuclei Flashcards
Which CN carry sympathetic fibres?
III, VII, IX, X
What are the somatic motor CN nuclei?
III, IV, VI, XII
What are the special visceral efferent nuclei?
V, VII, nucleus ambiguous
What fibres does the nucleus ambiguous give rise to?
Branchial efferent fibres of IX, X, XI
What are the visceral efferent (parasympathetic) nuclei?
Edinger Westphal, superior and inferior salivatory nuclei, dorsal motor nucleus of X
What does the Edinger-Westphal nucleus transmit?
Parasympathetic pre-ganglionic fibres of III to the eye
What do the superior and inferior salivary nuclei transmit?
Superior = VII - sublingual and submandibular gland. Inferior = IX - parotid gland
What are the general somatic afferent nuclei?
Mesencephalic root of V, chief sensory nucleus of V, spinal root of V
What does the mesencephalic root of V transmit?
Proprioceptive information from V
What does the chief sensory nucleus of V transmit?
Touch from face
What does the spinal root of V transmit?
Pain and temperature from the face
What are the special somatic afferent nuclei?
Cochlear nucleus
Vestibular nucleus
What does the cochlear nucleus transmit?
Auditory fibres from VIII
What are the visceral afferent nuclei?
Nucleus of solitary tract
What does the nucleus of solitary tract transmit?
Fibres from VII, IX, X
What does the nucleus of III send fibres to innervate?
Superior, inferior and medial rectus, inferior oblique, levator palpabele superioris
What does IV innervate?
Superior oblique
What does VI innervate?
Lateral rectus
What does XII innervate?
Muscles of the tongue
What does V innervate (motor)?
Muscles of mastication, tensor tympani, tensor palatine, mylohyoid, anterior digastric
What does VII innervate?
Muscles of facial expression, posterior digastric, stylohyoid, stapedius
What does fibres from nucleus ambiguous innervate?
Skeletal muscles of pharynx, larynx, soft palate
What does Edinger-Westphal fibres innervate?
Parasympathetic fibres of III - sphincter pupilliae
What does the superior salivatory nucleus innervate?
Submandibular, sublingual and lacrimal glad (VII)
What does the inferior salivatory nucleus innervate?
Parotid gland (IX)
What dot he fibres from nucleus of solitary tract innervate?
VII - taste from anterior 2/3 of tongue
IX - taste from posterior 1/3 of tongue
X - taste from epiglottis
What is the mesencephalic nucleus of V responsible for?
Proprioception from face
What is the chief sensory nucleus of V responsible for?
Touch from the face
What is the spinal root of V responsible for?
Pain and temperature from the face
