CN Nuclei Flashcards
(53 cards)
1
Q
CN 1
A
Olfactory
2
Q
CN 2
A
Optic
3
Q
CN 3
A
Oculomotor
4
Q
CN 4
A
Trochlear
5
Q
CN 5
A
Trigeminal
- V1- opthalmic
- V2- Maxillary
- V3- Mandibular
6
Q
CN 6
A
Abducens
7
Q
CN 7
A
Facial
8
Q
CN 8
A
Vestibulocochlear
9
Q
CN 9
A
Glossopharyngeal
10
Q
CN 10
A
Vagus
11
Q
CN 11
A
Accessory (or spinal accessory)
12
Q
CN 12
A
Hypoglossal
13
Q
Function(s) of: CN 1
A
Smell
14
Q
Function(s) of: CN 2
A
Vision
15
Q
Function(s) of: CN 3
A
- Motor to:
- Extraocular muscles:
- Medial Rectus
- Superior Rectus
- Inferior Rectus
- Inferior Oblique
- Levator palpebrae
- Ciliary muscles
- Pupillary sphincter
- Extraocular muscles:
16
Q
Function(s) of: CN 4
A
- Motor to:
- Superior Oblique Extraocular muscle
17
Q
Function(s) of: CN 5
A
- Facial Sensation
- Touch sensation on anterior 2/3 of tongue (V3)
- Motor to muscles of mastication (V3)
18
Q
Function(s) of: CN 6
A
- Motor to:
- Lateral Rectus
19
Q
Function(s) of: CN 7
A
- Motor to: (all from 2nd brachial arch)
- Muscles of facial expression
- Stylohyoid
- Posterior belly of digastric
- Stapedius
- Parasympathetic to:
- Lacrimal glands
- Submandibular glands
- Sublingual glands
- Taste Sensation to anterior 2/3 of tongue
20
Q
Function(s) of: CN 8
A
- Vestibular sense (equilibrium)
- Hearing
21
Q
Function(s) of: CN 9
A
- Motor to:
- Stylopharyngeus
- Parasympathetic to:
- parotid gland
- Sensory to:
- carotid sinus/bodies
- Touch sensation to:
- pharynx
- Posterior 1/3 of tongue
- Taste sensation to:
- Posterior 1/3 of tongue
22
Q
Function(s) of: CN 10
A
- Motor to:
- Pharynx
- Larynx
- Parasympathetic to:
- Heart
- Gi Tract
- Sensory to:
- Pharynx
- Trachea
- Esophagus
- Taste sensation to:
- Most posterior portion of tongue
23
Q
Function(s) of: CN 11
A
- Motor to:
- Sternoclidomastoid
- Trapezius
24
Q
Function(s) of: CN 12
A
- Motor to:
- Intrinsic tongue muscles (stick out tongue)
25
Movement of Superior Rectus Extraocular Muscle
Elevates when Abducted
26
Movement of Inferior Rectus Extraocular Muscle
Lower when Abducted
27
Movement of Inferior Oblique Extraocular Muscle
Elevates when Adducted
28
Movement of Superior Oblique Extraocular Muscle
Lower when Adducted
29
How to test function and result of a lesion to CN 1
* Function Testing:
* Identify a recognizable odor
* Result of Lesion:
* Anosmia
30
How to test function and result of a lesion to CN 2
* Function Testing:
* Visual acuity
* Pupillary reflexes
* Visual fields
* Result of Lesion:
* Decreased visual acuity
* impaired pupillary reflexes
* Visual field defects
31
How to test function and result of a lesion to CN 3
* Function Testing:
* Test extraocular muscles
* Inspect lid symmetry
* Pupillary reflexes
* Result of Lesion:
* Eye Deviates DOWN and OUT
* Ptosis
* Impaired accomodation
* Pupil Dilation
32
How to test function and result of a lesion to CN 4
* Function Testing:
* Test extraocular muscles
* Result of Lesion:
* Eye deviates UP and IN
* Ptosis
33
How to test function and result of a lesion to CN 5
* Function Testing:
* Pinprick/light touch on face
* Corneal reflex
* Lacrimation reflex
* Open or clench jaw
* Result of Lesion:
* Sensory deficits
* Trigeminal neuralgia (usually from compression)
* Jaw weakness
34
How to test function and result of a lesion to CN 6
* Function Testing:
* Test extraocular muscles
* Result of Lesion:
* Eye deviates MEDIALLY
* Ptosis
35
How to test function and result of a lesion to CN 7
* Function Testing:
* Wrinkle forehead
* Furrow eyebrows
* Puff cheeks
* Close eyes tightly
* Result of Lesion:
* Facial muscle weakness
* Bells palsy
* Dry Eyes
* Dry mouth
* Impaired taste
36
How to test function and result of a lesion to CN 8
* Function Testing:
* Test hearing
* Result of Lesion:
* Nystagmus
* Vertigo
* Balance problems
* Hearing loss
37
How to test function and result of a lesion to CN 9
* Function Testing:
* Gag reflex (also tests vagus)
* Result of Lesion:
* Dry mouth
* BP and HR dysregulation
* Impaired swallowing
* Impaired taste
38
How to test function and result of a lesion to CN 10
* Function Testing:
* Elevate the palate (say ah)
* Gag reflex
* Assess voice quality
* Result of Lesion:
* Impaired swallowing
* Dysphonia (hoarseness)
* Uvula deviation
39
How to test function and result of a lesion to CN 11
* Function Testing:
* Turn head
* Shrug shoulders
* Result of Lesion:
* Neck/Shoulder weakness
40
How to test function and result of a lesion to CN 12
* Function Testing:
* Stick out tongue
* Result of Lesion:
* Tongue deviation (deviates to side of lesion/Lick your lesion)
41
Site of exit of CN 1
Cribiform plate (fracture may sever branches)
42
Site of exit of CN 2
Optic canal
43
Site of exit of CN 3
Superior orbital fissure
44
Site of exit of CN 4
Superior orbital fissure
45
Site of exit of CN 5
V1- Superior orbital fissure V2- Foramen Rotundum V3- Foramen Ovale
46
Site of exit of CN 6
Superior orbital fissure
47
Site of exit of CN 7
Internal acoustic meatus
48
Site of exit of CN 8
Internal acoustic meatus
49
Site of exit of CN 9
Jugular Foramen
50
Site of exit of CN 10
Jugular Foramen
51
Site of exit of CN 11
Jugular Foramen
52
Site of exit of CN 12
Hypoglossal Canal
53
Conditions Causing a facial nerve palsy
* Lovely Bella Had An STD
* Lyme disease
* Bells Palsy
* Herpes simplex/zoster
* AIDS
* Sarcoidosis
* Tumors
* Diabetes
