Cranial nerves Flashcards
1
Q
- What do the following modalities mean?
- SSA
- SVA
- GVA
A
- Special Somatic afferent - vision, hearing balance
- Special visceral afferent - Smell, taste
- General visceral afferent - Sensory input from viscera
2
Q
- GSA
- GSE
A
- General sensory afferent - Perception of touch, pain, temperature
- General somatic efferent - Motor innervation of skeletal (Voluntary muscle)
3
Q
- GVE
- SVE
A
- General visceral efferent - Motor innervation to smooth muscle, heart muscle, and glands
- Special visceral efferent - Motor innervation to skeletal muscles derived from pharyngeal arch of mesoderm
4
Q
What are the 7 CN modalities?
A
- GSA - General somatic afferent
- SVA - Sensory Visceral afferent
- GVA - General visceral afferent
- GSE - General somatic efferent
- SVE - Special visceral efferent
- GVE - General visceral efferent
- SSA - Special somatic afferent
5
Q
- What modalities does CN1 have?
- Which nerve is this?
A
- SSA - Special sense of smell
- Olfactory nerve
6
Q
- Which nerve is CN2?
- Which modalities does CN2 have?
A
- Optic nerve
- SSA - Special sense of vision
7
Q
- Which nerve is CN III?
- Which modalities does CN III have?
A
- Occulomotor nerve
- GSE - Motor to extra-occular muscles (Medial, Superior Inferior Rectus & Inferior oblique) & Levator palpebri superioris
- GVE - Parasympathetic to Sphincter pupillae for accomodation
8
Q
- Which nerve is CN IV?
- Which modalities does CN IV have?
A
- Trochlear nerve
- GSE - Motor to superior oblique muscle
9
Q
- Which nerve is CN V?
- Which modalities does CN V have?
A
- Trigeminal nerve
- GSA - Sensory to face, orbit, nose, anterior tongue
- SVE - Motor to Temporalis muscle, masseter, medial and lateral pterygoids, tensor tympani, anterior belly of digastric, myolhyoid muscles
10
Q
- Which nerve is CN VI?
- Which modalities does CN VI have?
A
- Abducent nerve
- GSE - Motor to lateral rectus muscle
11
Q
- Which nerve is CN VII?
- Which modalities does CN VII have?
A
- Facial nerve
- GSA - Sensory to external acoustic meatus and auricle
- SVA - Special sense of taste to anterior 2/3 of tongue
- GVE - Motor to glands - lacrimal gland, submandibular, and sublingual salivary glands & Hard and soft palates
- SVE - Motor to facial muscles and scalp from 2nd pharyngeal arch - & stapedius, posterior belly of digastric, stylohyoid muscles
12
Q
- Which nerve is CN VIII?
- Which modalities does CN VIII have?
A
- Vestibulocochlear nerve
- SSA - Special sense of hearing and balance
13
Q
- Which nerve is CN IV?
- Which modalities does CN IV have?
A
- Glossopharyngeal nerve
- GSA - Sensory to posterior 1/3 of tongue, palatine tonsils, oropharynx, middle ear mucosa, eustachian tube, and mastoid air cells
- SVA - Special sense of taste - posterior tongue
- GVA - Sensory from middle ear, pharynx, carotid body & sinus
- GVE - Motor to parotid salivary gland
- SVE - Motor to stylopharyngeus muscle
14
Q
- Which nerve is CN X?
- Which modalities does CN X have?
A
- Vagus nerve
- GSA — Sensory from larynx, laryngopharynx & dura in PCF
- SVA - Special sense of taste, epiglottis
- GVA - Sensory from pharynx, larynx, and thoracic and abdominal organs, aortic body chemoreceptors and baroreceptors, esophagus, bronchi, lungs, heart
- GVE - Motor to smooth muscle and glands in pharynx, larynx, and thoracic and abdominal organs
- SVE - Motor to palatoglossus muscle, muscles of soft palate except tensor veli palatini, and pharynx and larynx except stylopharyngeus
15
Q
- Which nerve is CN XI?
- Which modalities does CN XI have?
A
- Spinal accessory nerve
- GSE - Motor to Sternocleidomastoid & Trapezius muscles
16
Q
- Which nerve is CN XII?
- Which modalities does CN XII have?
A
- Hypoglossal nerve
- GSE - Motor to muscles of tongue except Palatoglossus
17
Q
- What are the divisions of CN V?
A
- V1 - Opthalmic division
- V2 - Maxillary division
- V3 - Mandibular division
18
Q
- Where does the olfactory nerve exit from the skull
A
- Cribiform plate of ethmoid bone
19
Q
- Where does the optic nerve exit the skull?
A
- Optic canal
20
Q
- Where do the occulomotor, trochlear, and abducent nerve exit the skull?
A
- Superior orbital fissure
21
Q
- Where does the Trigeminal nerve exit the skull?
- V1
- V2
- V3
A
- V1 — Superior orbital fissure
- V2 — Foramen rotundum
- V3 — Foramen ovale
22
Q
- Where does the facial nerve exit the skull?
- Where does it actually leave the skull?
A
- Internal acoustic meatus
- Stylomastoid foramen
23
Q
- Where does the vestibulocochlear nerve leave the cranial cavity?
A
- Internal acoustic meatus
24
Q
- Where do the Glossopharyngeal, vagus, and accessory nerve exit the skull?
A
- Jugular foramen
25
Q
- Where does the hypoglossal nerve exit the skull?
A
- Hypoglossal canal
26
Q
- Which cranial nerves have GSA modality?
A
- CN V, CN VII, CN IX, CN X
27
Q
- Which cranial nerves have the GVA modality?
A
- CN IX,CN X
28
Q
- Which cranial nerves have the SVA modality?
A
- CN I, CN IX, CN VII, CN X
29
Q
- Which cranial nerves have the SSA modality?
A
- CN VII, CN II
30
Q
- Which cranial nerves have the GSE modality?
A
CN III, CN IV, CN VI, CN XI, CN XII
31
Q
- Which cranial nerves have the GVE modality?
A
- CN III, CN VII, CN IX, CN X
32
Q
- Which cranial nerves have the SVE modality?
A
- CN V, CN VII, CN IX, CN X
33
Q
- Which sense does the mesencephalic trigeminal nucleus supply?
A
- Proprioception
34
Q
Which sense does the chief trigeminal nucleus supply?
A
- touch
35
Q
- Which sense does the spinal trigeminal nucleus supply?
A
- pain and temperature
36
Q
- What is the nucleus of CN III? (2)
- Which part of the brainstem is it found?
A
- Erdinger Westphal nucleus & Occulomotor nucleus
- Midbrain
37
Q
- What is the nucleus of CN IV?
- Which part of the brainstem is it found?
A
- Trochlear nucleus
- Midbrain
38
Q
- What is the nucleus of CN V? Sensory and Motor
- Which part of the brainstem is it found?
A
- Sensory - Trigeminal nucleus (M+S+P) & Motor - Trigeminal motor nucleus
- Pons
39
Q
- What is the nucleus of CN VI?
- Which part of the brainstem is it found?
A
- Abducens nucleus
- Pons
40
Q
- What is the nucleus of CN VII? (2)
- Which part of the brainstem is it found?
A
- Facial nucleus & Superior salivatory nucleus
- Pons
41
Q
- What is the nucleus of CN VIII? (2)
- Which part of the brainstem is it found? (2)
A
- Vestibular and cochlear nuclei
- Medulla and Pons
42
Q
- What is the nucleus of CN IX? (4)
- Which part of the brainstem is it found?
A
- Inferior salivatory nucleus & Nucleus ambiguus & Nucleus solitarius & Spinal trigeminal nucleus
- Medulla & Pons
43
Q
- What is the nucleus of CN X? (3)
- Which part of the brainstem is it found?
A
- Dorsal vagal nucleus & Nucleus solitarius & Spinal trigeminal nucleus
- Medulla
44
Q
- What is the nucleus of CN XI? (2)
- Which part of the brainstem is it found?
A
- Accessory nucleus
- Medulla oblongata
45
Q
- What is the nucleus of CN XII? (2)
- Which part of the brainstem is it found?
A
- Hypoglossal nucleus
- Medulla
46
Q
Identify the cranial nerve motor nuclei:
- Accessory nucleus
- Hypoglossal nucleus
- Dorsal vagal nucleus
- Nucleus ambiguus
- Inferior salivatory nucleus
- Superior salivatory nucleus
- Facial nucleus
- Abducens nucleus
- Trigeminal motor nucleus
- Trochlear nucleus
- Occulomotor nucleus
- Erdinger westphal nucleus

A

47
Q
Identify the cranial nerve sensory nuclei:
- Mesencephalic trigeminal nucleus
- Pontine trigeminal nucleus
- Vestibular and cochlear nuclei
- Nucleus solitarius
- Spinal trigeminal nucleus

A
