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Hugh's MD1 Neuro > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (66)
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1

What is the anatomical landmark for the roustal end of the brainstem?

Mammillary bodies

1

Which CN's nuclei are in the brachial column of the motor region of the brainstem?

Roustral to caudal

Mandibular division of V/Trigeminal (Pons)

VII/Facial (Pons)

IX/Glossopharyngeal (Medulla)

X/Vagus (Medulla)

XI/Accessory (Spinal cord)

1

Which CN nuclei are contained in the nucleus solitarius?

CNVII, IX and X

2

Where does the nucleus ambiguus lie in relation to the inferior olive?

Behind

2

Which part of the brainstem does the gag reflex test?

The medulla

3

Which extraocula muscles does the oculomotor nerve innervate?

Medial rectus

Superior rectus

Inferior rectus

Inferior oblique

4

What type of sensory input does the nucleus solitarius deal with?

Taste (roustal aspect) 

Autonomic from the heart, abdomen and viscera

4

Where does the olfactory nerve exit the skull?

Cribiform plate of the ethmoid bone

5

Where does the opthalmic branch of CNV exit the skull?

Superior orbital fissure

5

Which nerve does the sensory input for the gag reflex?

Glossopharyngeal

6

What role does the facial nerve play in the corneal reflex?

Its temporal branch closes the eye

7

Which nerves go through the superior orbital fissure?

III

IV/Trochlea

VI/Abducent

V1

8

What is the motor innervation of the facial nerve?

Muscles of facial expression

Stapedius muscle (ear)

Part of the digastric muscle

9

What does the CNVIII do?

Sensory input from ears and vestibular apparatus

9

Where does the vestibulocochlear nerve exit the skull?

Internal auditory meatus

11

List the cranial nerves?

CNI - Olfactory

CNII - Optic

CNIII - Oculomotor

CIV - Trochlea

CNV - Trigeminal

CNVI - Abducent

CNVII - Facial

CNVIII - Vestibulocochlear

CNIX - Glossopharyngeal

CNX - Vagus

CNXI - Accessory

CNXII - Hypoglossal

12

What is the mesencephalic nuclei of the CNV for?

Proprioception

12

What does motor CNX do?

To striated muscles: Soft palate, pharynx, larynx, upper oesophagus and 1 tongue muscle

 

PS to many organs

13

Which nerve covers the motor efferent output of the corneal reflex?

CNVII/Facial

16

Which CN's nuclei are in the special sensory column of the sensory region of the brainstem?

 

VIII Vestibulocochlear (Pons/Medulla)

17

Which CN's nuclei are in the visceral column of the motor aspect of the brainstem?

From roustral to caudal

III/Oculomotor (midbrain) - nucleus is called the Edinger Westphal

VII/Facial (Pons) - Superior salivary nucleus

IX/Glossopharyngeal (Medulla) - Inferior salivary nucleus

X/Vagus (Medulla) - Dorsal motor nucleus of vagus

18

Apart from motor and sensory, what does CNX do?

Input from baro and chemoreceptors of the aortic arch

20

Which cranial nerves are purely sensory?

CNI - Olfactory

CNII - Optic

CNVIII - Vestibulocochlear

22

What are the three columns of sensory nuclei in the lateral aspect of brainstem called (medial to lateral)?

Visceral

Somatic 

Special

23

What branch of the facial nerve does the motor function?

Facial nerve proper

23

Which nerve does the motor output for the gag reflex?

X - to the pharynx

25

Which cranial nerves are mixed sensory and motor?

CNV - Trigeminal

CNVII - Facial

CNIX - Glossopharyngeal

CNX - Vagus

26

What is the sensory distribution of the Trigeminal nerve?

Face - infront of the ear 

(Split into opthalmic V1, maxillary V2 and mandibular V3)

Inside mouth

26

Where does the maxillary division of CNV exit the skull?

Foramen rotundum

27

Where do the nerve of the ocular motion exit the skull?

Superior orbital fissure