Flashcards in 21. Cranial Nerves 7-12 Deck (49)
What are the 3 types of motor fibres?
What are the 3 types of sensory fibres?
Visceral and taste
Which cranial nerves have somatic motor fibres?
3, 4, 6, 12
Which cranial nerves have branchiomotor fibres?
5c, 7, 9, 10, 11
Which cranial nerves have parasympathetic motor fibres?
3, 7, 9, 10
Which cranial nerves have somatic sensory fibres?
5, 7, 9, 10
Which cranial nerves have visceral sensory fibres?
7, 9, 10
Which cranial nerves have special sensory fibres?
1, 2, 8
What are the motor functions of CN VII?
Branchiomotor to second arch (facial expresion
What ganglion contains the sensory nerve bodies of VII?
What are the sensory functions of VII?
Somatosensory to the ear
Visceral sensory taste to hard palate and anterior 2/3 of tongue
How can you test CN VII?
Test each facial muscle
Where does CN VIII emerge?
Where are the vestibular and cochlear nuclei found?
Floor of the 4th ventricle
Where do signals from the cochlear nuclei go?
Medial geniculate body
Where does CN IX emerge?
Behind the olives of the medulla
What are the motor functions of CN IX?
Branchiomotor to 3rd arch: stylopharyngeus
Parasympathetic to otic ganglion
What ganglion is associated with branchiomotor CN IX?
What are the sensory functions of CN IX?
Somatic (superior ganglion) to the tympanic membrane and posterior 1/3 of tongue
Visceral (inferior ganglion) to oropharynx and taste to posterior 1/3 of tongue, carotid body
What will happen to the uvula if the nucleus ambiguus is damaged?
Uvula deviates away from the side of the lesion
What are the motor functions of CN X?
Branchiomotor to 4th and 6th arches: swallowing and phonation
Parasympathetic to thoracoabdominal region
What are the sensory functions of CN X?
Somatic to internal laryngeal nerve
Visceral taste to valleculae and to viscera in heart and abdomnen
What are the two parts of CN XI?
What is the course of the cranial accessory nerve?
Runs with X in the nucleus ambiguus
How is the spinal accessory nerve tested?
Test sternocleidomastoid and trapezius
What is the motor function of CN XII?
Somatic to the tongue
Where does CN XII emerge from?
between pyramids and olives of the medulla
What will happen to the tongue if there is a lesion of XII?
Tongue will deviate towards the side of the lesion
What does a lesion of III cause?