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MD4001 Anatomy > Cranial nerves 4 > Flashcards

Cranial nerves 4 Flashcards

(69 cards)

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1
Q

what are the functions of glossopharyngeal (9)

A

stylopharyngeus muscle (special visceral efferent)

parotid gland parasympathetic supply (general visceral efferent)

carotid sinus and carotid body (general visceral afferent)

1o….general sensory from pharynx and posterior tongue (general somatic afferent)

taste from posterior third of the tongue (special visceral afferent)

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2
Q

What is the function of the vagus nerve

A

parasympathetic heart lungs Gi tract

taste

carotid body and sinus

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3
Q

what is the function of hypoglossal nerve (12)

A

motor tongue (somatic efferent)

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4
Q

what is the trigeminal motor nucleus derived from

A

muscles from the first pharyngeal arch

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5
Q

what is the function of the trigeminal mesencephalic nucleus

A

proprioception

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6
Q

what is the function of the trigeminal prinicple sensory nucleus

A

discriminitave touch

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7
Q

what is the funtion of the trigeminal spinal nucleus

A

pain and temperature, general conscoius sensation for the viscera supplied by 9 and 10

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8
Q

what is the function of the inferior salivatory nucleus of glossopharyngeal

A

parasympathetic secretomotor to parotid

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9
Q

what is the function of hypoglossal nucleus

A

motor to tongue

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10
Q

what is the function of accessory spinal root

A

motor to sternocleidomastoid and trapezius

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11
Q

what is the function of the solitary nucleus 0f 9 and 10

A

taste and visceral sensation

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12
Q

why do lesions of 8, 10, 11 and 12 commonly happen together

A

they lie close together at the base of the skull

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13
Q

what does the nucleus ambiguos of 9 and 10 supply

A

striated muscles of the pharynx and larynx

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14
Q

what does the dorsal nucleus of vagus supply

A

p’symp to heart lungs and intestine

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15
Q

what does the spinal nucleus of 5 receive

A

general sensation from 9 and 10

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16
Q

which two nerves join together to make the special visceral efferent from the nucleus ambiguus

A

cranial accessory and vagus

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17
Q

which nerves arise from the medulla and pass through the jugular foramen

A

9 10 and 11

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18
Q

what does cranial nerve 12 pass through

A

anterior condylar canal

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19
Q

what does the accessory nerve pass through

A

foramen magnum and then jugular foramen

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20
Q

what nerves are found between the internal carotid artery and internal jugular vein

A

9, 10, 11, 12

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21
Q

what trigeminal nerve division recieves a contribution from 9

A

auriculotemporal nerve

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22
Q

which trigeminal nerve joins with the chorda tympani

A

lingual nerve

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23
Q

where does pain from the tonsil and oropharynx refer to

A

middle ear

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24
Q

describe the course of the lesser petrosal nerve

A

leaves the middle ear and lies on the surface of the petrous temporal bone in the middle cranial fossa, before emerging thro the foramen ovale
synapses in the otic ganglion

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25
what passes through the jugular foramen
internal jugular vein, nerves 9, 10 and 11
26
what passes through the carotid canal
internal carotid artery
27
what do the ganglionic swellings on 9 and 10 house
cell bodies of primary sensory neurones
28
what nerve defects affect swallowing and the gag reflex
9 and 10
29
what does 10 and 11 supply
general sensation from auricle and external accoustic meatus, plus the laryngopharynx and larynx taste from vallecula and epiglotis visceral sensory afferents from blood vessels for control of CVS, plus afferents from heart lungs and gi motor supply to muscle of pharynx and larynx
30
where is the pharyngeal plexus
external pharyngeal wall over middle constrictor
31
what is the nerve supply to the pharynx
pharyngeal plexus | recieves branches 9 and 10 plus cervical sympathetics
32
what is the sensory nerve supply to the Oropharynx, palatine tonsil, inferior aspect of soft palate and posterior 1/3 tongue
Glossopharyngeal (IX) Referred pain to middle ear
33
what is the sensory nerve supply of laryngopharynx, vallcula and epiglottis
vagus
34
what is the sensory nerve supply of the soft palate
combination of V2 and 9
35
what is the sensory nerve supply of the nasopharynx
maxillary V2
36
what is the motor nerve supply of the pharynx
vagus except stylopharyngeus which is glossopharyngeal
37
what is the parasympathetic secretomotor supply of the pharynx
vagus plus the pterygopalatine ganglion via V2
38
what is the afferent supply of the gag reflex
9
39
what is the efferent supply of the gag reflex
10
40
where does the hypoglossal nerve arise from
hypoglossal/ anterior condylar canal
41
describe the course of the hypoglossal nerve
descends the neck, passes lateral to both the internal and external carotid arteries and associated with a loop of cranial nerves that supply the strap muscles of the neck
42
how is the tongue affected in a hypoglossal nerve lesion
ipsilateral tongue weakness so it deviates to the side of the lesion
43
describe the course of hypoglossal when it enters the oral cavity
enters under the tongue between mylohyoid and hyoglossus to supply all tongue muscles except palatoglossus
44
what is the nerve supply of palatoglossus
10 via pharyngeal plexus
45
what are the functions of glossopharyngeal
``` sensory to middle ear psymp to parotid motor to stylopharyngeus special visceral sensory to tonsils, pharynx and tongue taste to post tongue baro/chemo receptors ```
46
what are the limbs of the sneeze and cough reflexes
v2 afferent 9 and 10 efferent involves trigeminal sensory nucleus and nucleus ambiguus
47
inferior salivatory nucleus
glossopharyngeal nerve to parotid gland
48
superior salivatory nucleus
facial nerve to sub glands
49
what happens in complete paralysis of the recurrent laryngeal nerve
the vocal fold lies semi abducted- vibrates so respiration is noisy
50
what happens in partial paralysis of the recurrent laryngeal
the vocal fold moves into the midline- if bilateral then life threatening
51
what is the effect of paralysis of the external laryngeal nerve
may be hoarseness of the voice
52
where is the right recurrent laryngeal nerve
inferior to the subclavian artery
53
where is the left recurrent laryngeal nerve
inferior to the aorta and ligamentum arteriosum | ascends between the trachea and oesophaus
54
what does the recurrent laryngeal nerve supply
all muscles of the larynx except cricothyroid and sensation to the vocal cords and larynx
55
what is the function of the superior laryngeal nerve
sensation of the larynx down tot he vocal folds (internal branch)
56
what is the nerve supply to the cricothyroid
external branch of superior laryngeal nerve
57
what nerves are at risk during thyroid surgery
laryngeal
58
where is the pteryogmandibular raphe
superior contrictor and buccinator
59
what is the sensation supply to the tongue
lingual (5) and glossopharyngeal
60
what is the motor supply to tongue muscles
hypoglossal except palatoglossus which is vagus via pharyngeal plexus
61
what is the nerve supply to the muscles of the pharynx
vagus except stylopharyngeus
62
what nerves does the pharyngeal plexus (external pharyngeal wall) contain
9, 10 and cervical sympathetics
63
what is the sensory nerve supply to the vallecula and epiglottis
vagus
64
what is the sensory supply to the oropharynx, palatine tonsil, soft palate and post tongue
9 referred pain to middle ear
65
what muscle does the pharyngeal plexus overlie
middle constrictor
66
what nuclei are involved in the gag reflex
solitarius | ambiguus
67
what pharyngeal arches are the muscles of the pharynx and larynx derived from
4 and 6
68
what passes through the jugular foramen
internal jugular vein | nerves 9, 10 and 11
69
describe the course of the spinal accesory nerve
passes up through the foramen magnum and then back out via the jugular foramen

MD4001 Anatomy (45 decks)

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