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You'll love Neuroscience, baby > CN VII-XII: CREngcreng Nerve > Flashcards

CN VII-XII: CREngcreng Nerve Flashcards

1
Q

Components of CN VII

A

Motor SVE, Sensory SVA, Sensory GSA, Parasympathetic GVE

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2
Q

Carries brachial motor fibers for facial expression

A

Main trunk of facial n.

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3
Q

Carries fibers for PSY (tearing and salivation), taste, and GSA

A

Nervus intermedius

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4
Q

3 nuclei of CN VII

A

Main Motor Nucleus
Parasympathetic Nuclei
Sensory Nucleus

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5
Q

Parasympathetic Nuclei of CN VII

A

Superior salivatory nucleus
Lacrimal nucleus

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6
Q

Sympathetic Nuclei of CN VII

A

Nucleus tractus solitarius
Trigeminal nucleus

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7
Q

Lies deep in the reticular formation of the lower part of the pons

A

Main Motor Nucleus

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8
Q

Part of the nucleus supplies muscles of the upper part of the face receives fibers from both cerebral hemispheres

A

Main Motor Nucleus

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9
Q

Part of the nucleus that supplies the lower part of the face receives only corticonuclear fibers from the opposite cerebral hemisphere

A

Main Motor Nucleus

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10
Q

Voluntary control of facial muscles

A

Main Motor Nucleus

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11
Q

contralateral side of motor cortex

A

Lower part of face

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12
Q

both sides of motor cortex

A

Upper part of face

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13
Q

Lie posterolateral to the main motor nucleus

A

Parasympathetic Nuclei

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14
Q

Receives afferent fibers from thalamus through descending autonomic pathways

A

Superior Salivatory Nucleus

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15
Q

Receives afferent fibers from hypothalamus for emotional responses and from sensory nuclei of trigeminal nerve for reflex lacrimation due to irritation

A

Lacrimal Nucleus

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16
Q

Lies close to motor nucleus

A

Nucleus of Tractus Solitarius

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17
Q

Location of Nucleus of Tractus Solitarius

A

Upper part (rostral)

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18
Q

Nucleus of Tractus Solitarius for

A

Taste

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19
Q

Central processes of unipolar cells of geniculate ganglion

A

Sensory Root (nervus intermedius)

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20
Q

CNVII pass laterally in__with ___ and enter the __ in petrous part of temporal bone

A

posterior cranial fossa ; CNVIII;internal acoustic meatus

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21
Q

lies in the genu and contains primary sensory neurons for taste in anterior ⅔ of tongue, GSA for a region near external auditory meatus

A

Geniculate ganglion

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22
Q

Main portion exits the skull through the

A

stylomastoid foramen

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23
Q

Pass through the parotid gland and divides to 5 major brachial motor branches that control facial expression:

A

Temporal
Zygomatic
Buccal
Mandibular
Cervical
Other smaller motor branches innervate the stapedius, occipitalis, posterior belly of digastric, and stylohyoid muscles

24
Q

Dampen movements of middle ear ossicles providing feedback modulation of acoustic signal intensity

A

Stapedius

25
Q

Nerve supplying tensor tympani

A

Trigeminal

26
Q

Preganglionic PSY fibers from Superior Salivatory Nucleus – carried by

A

greater petrosal nerve (takes off the main trunk of CN VII)

27
Q

Preganglionic PSY fibers from Superior Salivatory Nucleus – carried by greater petrosal nerve (takes off the main trunk of CN VII) to reach

A

sphenopalatine (pterygopalatine) ganglion

28
Q

Preganglionic PSY fibers from Superior Salivatory Nucleus – carried by greater petrosal nerve (takes off the main trunk of CN VII) to reach sphenopalatine (pterygopalatine) ganglion where postganglionic PSY project to

A

lacrimal glands and nasal mucosa

29
Q

Chorda tympani carry

A

SVA taste for anterior ⅔ of tongue

30
Q

Chorda tympani synapse with

A

rostral nucleus solitarius (gustatory nucleus)

31
Q

Ascending projections travel via ___ to VPM then to cortical gustatory area

A

central tegmental tract

32
Q

inferior margin of the postcentral gyrus adjacent to tongue somatosensory area and extends into the fronto-parietal operculum and insula

A

BA 43

33
Q

Superior salivatory nucleus

A

submandibular and sublingual glands, nasal, and palatine glands

34
Q

Lacrimal nucleus

A

lacrimal gland

35
Q

taste from anterior ⅔ of tongue, floor of mouth and palate

A

Sensory nucleus

36
Q

UMN in face area of primary motor cortex control LMN in the__ facial nucleus

A

contralateral

37
Q

Affect nearly entire half of the face and don’t spare the forehead

A

Lower Motor Neuron

38
Q

UMN lesion

A

contralateral side

39
Q

LMN lesion

A

affects whole face

40
Q

Components of vestibulocochlear

A

Purely sensory (SSA)

41
Q

Exit of CN VIII

A

Internal Acoustic Meatus

42
Q

Head position

A

Utricle and saccule

43
Q

head movement

A

Semi circular canals

44
Q

4 nuclei of Vestibular Nuclear Complex

A

4 Nuclei
Beneath floor of 4th ventricle
Lateral vestibular nucleus
Superior vestibular nucleus
Medial vestibular nucleus
Inferior vestibular nucleus

45
Q

Efferents also descend uncrossed to spinal cord from lateral vestibular nuclei to form

A

Vestibulospinal Tract

46
Q

Organ of Corti in cochlea

A

Cochlear Nerve

47
Q

Spiral ganglion of cochlea

A

Cochlear Nerve

48
Q

Enter anterior surface of brainstem at lower border of pons on the lateral side of facial nerve

A

Cochlear Nerve

49
Q

2 branches of the cochlear nerve

A

Posterior cochlear nucleus
Anterior cochlear nucleus

50
Q

Location of Cochlear Nuclei

A

Inferior Cerebral Peduncle

51
Q

Send axons that run medially through pons to end in trapezoid body and olivary nucleus

A

Cochlear Nuclei

52
Q

Relayed in posterior nucleus of trapezoid body and superior olivary nucleus on same or opposite side

A

Cochlear Nuclei

53
Q

Cochlear nuclei ascend through posterior part of pons and midbrain as

A

lateral leminiscus

54
Q

Ascend and relay in small groups of nerve cell

A

nucleus of lateral leminiscus

55
Q

Transverse gyrus of Heschi on upper surface of superior temporal gyrus

A

Primary auditory cortex (Area 41 and 42)

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