Flashcards in 6 - Head & Neck - Cranial Nerves Deck (30)
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1
Which 3 cranial nerves are purely special sensory?
CN I (Olfactory)
CN II (Optic)
CN VIII (Vestibulocochlear)
2
Which cranial nerves carry efferent autonomic fibres?
CN III
CN VII
CN IX
CN X
3
Which cranial nerves are purely motor?
CN III
CN IV
CN VI
CN XI
CN XII
4
Which cranial nerve supplies motor fibres to the ciliary muscles and the sphincter of the pupil?
CN III Oculomotor
5
Which cranial nerve supplies motor fibres to the superior oblique muscle of the eye?
CN IV Trochlear
6
Which cranial nerve supplies motor fibres to the lateral rectus muscle of the eye?
CN VI Abducens
7
Which cranial nerve supplies motor fibres to the muscles of mastication?
CN V Trigeminal
8
Which cranial nerve supplies motor fibres to the muscles of facial expression?
CN VII Facial
9
Which cranial nerve supplies sensory fibres for hearing?
CN VIII Vestibulocochlear
10
Which cranial nerve supplies general sensation to the pharynx, eustachian tube and middle ear cavity?
CN IX Glossopharyngeal
11
Which cranial nerve supplies motor fibres to the larynx, trachea, bronchial tree, heart and most of GI tract?
CN X Vagus
12
Which cranial nerve supplies motor fibres to Sternocleidomastoid?
CN XI Accessory
13
Which cranial nerve supplies motor to all intrinsic and extrinsic muscles of the tongue, except palatoglossus?
CN XII Hypoglossus
14
What parts of the head/neck have sensory innervation from the Trigeminal nerve (CN V)?
- Face
- Sinuses
- Teeth
15
A patient with a brainstem lesion in the pons may present with dysfunction of which cranial nerves?
CN V
CN VI
CN VII
CN VIII
16
Which cranial nerves exit the skull via the Internal Acoustic Meatus?
CN VII
CN VIII
17
Which cranial nerves exit the skull via the Superior Orbital Fissure?
CN III
CN IV
CN V1
CN VI
18
Which cranial nerves exit the skull via the Jugular Foramen?
CN IX
CN X
CN XI
19
Through which hole does CN XII (hypoglossus) exit the skull?
Hypoglossal canal
20
Through which hole does CN V2 exit the skull?
Foramen rotundum
21
Through which hole does CN V3 exit the skull?
Foramen ovale
22
Which cranial nerves pass through the cavernous sinus?
CN III
CN IV
CN V1
CN V2
CN VI
23
How may a cavernous sinus thrombosis present?
- Headache +/- Fever
- Periorbital oedema = exopthalmos (may affect sight)
- Ophthalmoplegia
- Diplopia
- Ptosis
- Mydriasis
- Pain/numbness around forehead/cheek
24
What is mydriasis? Lesion of which cranial nerve will cause this?
Dilation of the pupil of the eye
CN III Oculomotor
25
Why are CN I, II and XI considered unusual compared to the other cranial nerves?
CN I + II are direct continuations of the forebrain
CN XI contains fibres from the cervical spine
26
Which cranial nerves originate from the midbrain?
CN III
CN IV
27
Which cranial nerves originate from the pons?
CN V
CN VI
CN VII
CN VIII
28
Which cranial nerves originate from the medulla?
CN IX
CN X
CN XI
CN XII
29
Which cranial nerves pass into the orbit?
CN II
CN III
CN IV
CN V1
CN V2
CN VI
30
