Cranial Nerve Examination Flashcards

1
Q

Describe the route which the olfactory nerve takes from the olfactory cells to the brain?

A

Olfactory cells of the nasal mucosa then the olfactory bulbs and then travels to the pyriform cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What structures/signs should be examined when testing the optic nerve?

A
Opthalmoscope
Pupillary responses
Visual acuity
Visual field
Blind spot
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where is the nucleus of the oculomotor nerve?

A

Motor nucleus is the oculomotor nucleus in the midbrain

Parasympathetic nucleus is the edinger-westphal nucleus in the midbrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which muscles do the oculomotor nerve innervate?

A

Inferior oblique
Superior rectus
Medial rectus
Inferior rectus muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where is the nucleus of the trochlear nerve?

A

Inferior colliculus of the midbrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which muscle is innervated by the trochlear nerve?

A

Superior oblique muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which cranial nerve has the longest intracranial course?

A

Trochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which muscle is innervated by the abducens nerve?

A

Lateral rectus muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the internuclear ophthalmoplegia?

A

A disorder of conjugate gaze where there is failure of adduction of the affected eye with nystagmus on lateral gaze in the contralateral eye.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What conditions is. highly associated with internuclear ophthalmoplegia?

A

MS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the signs/symptoms of Horner’s syndrome?

A

Mitosis
Ptosis
Anhidrosis
Apparent enopthalmos

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the possible causes. of Horner’s. syndrome?

A
Congenital
Brainstem stroke
Cluster ehadache
Apical lung tumour
MS
Carotid artery dissection
Cervical rib fracture
Syringomyelia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the functions of the trigeminal nerve?

A

Sensory input from the face and anterior 2/3 of the tongue

Innervates muscles of mastication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where are the nuclei of the trigeminal nerve situated?

A

Sensory nuclei in pons and medulla

Motor nuclei in pons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How is herpes zoster opthalmosis treated?

A

Oral acyclovir

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the function of the facial nerve?

A

Innervates muscles of facial expression
Provides sensation of the anterior 2/3 of the tongue
Innervates the salivary glands

17
Q

Where are the nuclei of the facial nerve situated?

A

Motor nuclei in pons

sensory and parasympathetic nuclei in the medulla

18
Q

Which nerves are involved in the corneal reflex?

A

Afferent CN5

Efferent CN7

19
Q

What are the functions of the glossopharyngeal nerve?

A

Sensation of posterior 1/3 of tongue, pharyngeal wall
Carotid sinus blood pressure receptors
Swallowing and gag reflex
Innervates parotid glands

20
Q

What are the functions of the vagus nerve?

A

Chemoreceptors in carotid bodies
Pain receptors in respiratory and digestive tracts
Sensation of external. ear, larynx and pharynx
Controls heart rate and stroke volume, smooth muscles of the digestive tract and bronchial tubes, swallowing

21
Q

What is the function of spinal accessory nerve?

A

Innervates sternocleidomastoid and trapzieus muscles

22
Q

What is the function of hypoglossal nerve?

A

Innervates the tongue to control speech and swallowing

23
Q

If there is a lesion fo CN 3, 4, 5 (1+2), and 6, which structure is likely the location of the lesion?

A

Cavernous sinus

24
Q

If there is a lesion fo CN 3, 4, 5(1), and 6, which structure is likely the location of the lesion?

A

Superior orbital fissure

25
Q

If there is a lesion fo CN 5, 7 and 8 which structure is likely the location of the lesion?

A

Cerebellopontine angle

26
Q

If there is a lesion fo CN 9, 10 and 11 which structure is likely the location of the lesion?

A

Jugular foramen

27
Q

If there is a lesion fo CN 9, 10, 11 and 12, which structure is likely the location of the lesion?

A

Bulbar / psuedobulbar palsy