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Neuro module 5 > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

Trigeminal Nerve Sensory Nuclei

A
  1. Spinal trigeminal
  2. Principal sensory
  3. Mesencephalic
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2
Q

Located in the medulla

A

Spinal Trigeminal Nucleus

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3
Q

Receives information about deep/crude touch, pain and temperature from the ipsilateral face

A

Spinal Trigeminal Nucleus

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4
Q

CNs VII, IX and X also convey pain information from their areas to the ____

A

Spinal Trigeminal Nucleus

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5
Q

A group of second order neurons which have cell bodies in the caudal pons

A

Principal Sensory Nucleus

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6
Q

Receives information about discriminative sensation and light touch of the face as well as conscious propioception of the jaw via first order neurons

A

Principal Sensory Nucleus

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7
Q

Most of the sensory information crosses the midline and travels to the contralateral ventral posteriomedial (VPM) nucleus of the thalamus via the ventral trigeminothalamic tract

A

Principal Sensory Nucleus

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8
Q

Information from the oral cavity travels to the ipsilateral ventral posteriomedial (VPM) nucleus of the thalamus via the dorsalal trigeminothalamic tract

A

Principal Sensory Nucleus

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9
Q

Involved with propioception of the face, that is, the feeling of position of the muscles

A

Mesencephalic Nucleus

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10
Q

Unlike many nuclei within the CNS, this nucleus contains no chemical synapses but are electrically coupled

A

Mesencephalic Nucleus

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11
Q

Neurons of this nucleus are pseudounipolar cells receiving propioceptive information from the mandible, and sending projections to the motor trigeminal nucleus to mediate monosynaptic jaw jerk reflexes

A

Mesencephalic Nucleus

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12
Q

The only structure in the CNS to contain the cell bodies of a primary afferent, which are usually contained within ganglia

A

Mesencephalic Nucleus

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13
Q

Located in the mid-pons

A

Trigeminal Motor Nucleus

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14
Q

Contains motor neurons that innervate muscles of the first branchial arch, namely the muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric

A

Trigeminal Motor Nucleus

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15
Q

Muscles of mastication

A
  1. masseter
  2. temporalis
  3. medial pterygoid
  4. lateral pterygoid
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16
Q

Other muscles of mastication

A
  1. Tensor veli palatini
  2. mylohyoid
  3. anterior belly of digastric
  4. tensor tympani
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17
Q

Controls the muscles of facial expression

A

Facial Nerve

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18
Q

Conveys taste sensations from the anterior two-thirds of the tongue and oral cavity

A

Facial Nerve

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19
Q

Supplies preganglionic parasympathetic fibers to several head and neck ganglia

A

Facial Nerve

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20
Q

arises from the facial nerve nucleus in the pons

A

motor part of the facial nerve

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21
Q

the sensory and parasympathetic parts of the facial nerve arise from the ___

A

nervus intermedius

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22
Q

Forms the geniculate ganglion prior to entering the facial canal

A

Facial Nerve

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23
Q

Facial Nerve Intracranial Branches

A
  1. Greater petrosal nerve
  2. Nerve to stapedius
  3. Chorda tympani
  4. Intrapetrous facial
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24
Q

provides parasympathetic innervation to several glands, including the nasal, palatine, lacrimal and pharyngeal glands

A

Greater petrosal nerve

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25
Q

also provides parasympathetic innervation to the sphenoid, frontal, maxillary and ethmoid sinuses as well as the nasal cavity

A

Greater petrosal nerve

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26
Q

Innervates:
Submandibular gland
Sublingual gland
Special sensory taste fibers for the anterior 2/3 of the tongue.

A

Chorda tympani

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27
Q

provides motor innervation for stapedius muscle in middle ear

A

Nerve to stapedius

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28
Q

Distal to stylomastoid foramen, the following nerves branch off the facial nerve:

A
  1. Posterior auricular nerve
  2. Branch to posterior belly of digastric as well as the stylohyoid muscles
  3. Five major facial branches (in parotid gland)
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29
Q

controls movements of some of the scalp muscles around the ear

A

Posterior auricular nerve

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30
Q

Five major facial branches

A
  1. temporal
  2. zygomatic
  3. buccal
  4. marginal mandibular
  5. cervical
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31
Q

Mixed motor and sensory but mostly sensory

A

Glossopharyngeal Nerve

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32
Q

Aids in tasting, swallowing and salivary secretions. Its superior and inferior (petrous) ganglia contain the cell bodies of pain fibers

A

Glossopharyngeal Nerve

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33
Q

Projects into many different structures in the brainstem

A

Glossopharyngeal Nerve

34
Q

Glossopharyngeal Nerve Brainstem Connections

A
  1. Solitary nucleus
  2. Spinal nucleus of trigeminal nerve
  3. Lateral nucleus of ala cinerea
  4. Nucleus ambiguus
  5. Inferior salivatory nucleus
35
Q

taste from the posterior one-third of the tongue and information from carotid baroreceptors and carotid body chemoreceptors

A

Solitary nucleus

36
Q

somatic sensory fibers from the middle ear

A

Spinal nucleus of trigeminal nerve

37
Q

visceral pain

A

Lateral nucleus of ala cinerea

38
Q

the lower motor neurons for the stylopharyngeus muscle

A

Nucleus ambiguus

39
Q

parasympathetic input to the parotid and mucus glands

A

Inferior salivatory nucleus

40
Q

Glossopharyngeal Nerve Branches

A
  1. Tympanic
  2. Stylopharyngeal
  3. Tonsillar
  4. Nerve to carotid sinus
  5. Branches to the posterior third of the tongue
  6. Lingual branches
  7. A communicating branch to the Vagus Nerve
41
Q

runs posterior to the common carotid artery and internal jugular vein inside the carotid sheath

A

Vagus Nerve

42
Q

Vagus Nerve includes axons which emerge from or converge onto four nuclei of the medulla:

A
  1. Dorsal nucleus of vagus
  2. Nucleus ambiguus
  3. Solitary nucleus
  4. Spinal trigeminal nucleus
43
Q

sends parasympathetic output to the viscera, especially the intestines

A

Dorsal nucleus of vagus

44
Q

gives rise to the branchial efferent motor fibers of the vagus nerve and preganglionic parasympathetic neurons that innervate the heart

A

Nucleus ambiguus

45
Q

receives afferent taste information and primary afferents from visceral organs

A

Solitary nucleus

46
Q

receives information about deep/crude touch, pain, and temperature of the outer ear, the dura of the posterior cranial fossa and the mucosa of the larynx

A

Spinal trigeminal nucleus

47
Q

Contributes to visceral innervation

A

Vagus Nerve

48
Q

Also conveys sensory information about the state of the body’s organs to the CNS

A

Vagus Nerve

49
Q

% of the nerve fibers in the vagus nerve are afferent nerves communicating the state of the viscera to the brain

A

80-90

50
Q

Vagus Nerve Innervations part 1

A
  1. Auricular nerve
  2. Pharyngeal nerve
  3. Superior laryngeal nerve
  4. Superior cervical cardiac branches of vagus nerve
  5. Inferior cervical cardiac branch
  6. Recurrent laryngeal nerve
51
Q

Vagus Nerve Innervations part 2

A
  1. Thoracic cardiac branches
  2. Branches to the pulmonary plexus
  3. Branches to the esophageal plexus
  4. Anterior vagal trunk
  5. Posterior vagal trunk
  6. Hering-Breuer reflex in alveoli
52
Q

Provides motor innervation from the CNS to two muscles of the neck: the sternocleidomastoid and the trapezius muscles

A

Accessory Nerve

53
Q

tilts and rotates the head

A

Sternocleidomastoid muscle

54
Q

elevates shoulder and adducts the scapula

A

Trapezius

55
Q

Supplies motor fibres to all of the muscles of the tongue, except the palatoglossus muscle

A

Hypoglossal Nerve

56
Q

If afferent

A

somatic (touch/pain/temperature/propioception) or special (special senses)

57
Q

If efferent

A

visceral (internal organs) or somatic (skeletal muscles)

58
Q

Smell

A

I Olfactory

59
Q

Vision

A

II Optic

60
Q

Eye movements other than those mediated by IV & VI. Elevation of upper eyelid

A

III Oculomotor

61
Q

Constriction of pupil (ciliary ganglion)

A

III Oculomotor

62
Q

Certain downward eye movements

A

IV Trochlear

63
Q

Muscles that open and close the mouth; tensor tympani muscle of middle ear

A

V Trigeminal

64
Q

Skin of face; mouth, teeth, nose, sinuses, dura mater of anterior and middle fossa

A

V Trigeminal

65
Q

Abduction of eye

A

VI Abducens

66
Q

Muscles of face; stapedius muscle of middle ear

A

VII Facial

67
Q

Lacrimal and nasal glands (pterygopalatine ganglion); sublingual & submandibular salivary glands (submandibular ganglion)

A

VII Facial

68
Q

Part of external ear and tympanic membrane

A

VII Facial

69
Q

Taste: palate & anterior two thirds of tongue

A

VII Facial

70
Q

Equilibration

Hearing

A

VIII Vestibulocochlear:
Vestibular
Cochlear

71
Q

Stylopharyngeus muscle

A

IX Glossopharyngeal

72
Q

Parotid gland (otic ganglion)

A

IX Glossopharyngeal

73
Q

Pharynx, middle ear, posterior third of tongue

A

IX Glossopharyngeal

74
Q

Taste: posterior third of tongue

A

IX Glossopharyngeal

75
Q

Muscles of larynx & pharynx

A

X Vagus

76
Q

Slows heart (cardiac ganglia); increases gastric acid secretion and empties stomach (enteric nervous system)

A

X Vagus

77
Q

Larynx, trachea, oesophagus, dura of posterior fossa; part of external ear and tympanic membrane

A

X Vagus

78
Q

Taste: epiglottis

A

X Vagus

79
Q

Trapezius and sternocleidomastoid muscles

A

XI Accessory³ (Spinal component)

80
Q

Muscles that move the tongue

A

XII Hypoglossal

Neuro module 5 (1 decks)

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