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Flashcards in cervical and cranial nerves Deck (29):
1

ansa cervicalis superior root levels and inferior root levels

superior: C1-C2
inferior: C2-C3

2

Superficial cervical nerves from C2-3

lesser occipital nerve
greater auricular nerve
transverse cervical nervre

3

superficial cervical nerves from C3-C4

supraclavicular nerves

4

where is the loop of the ansa cervicalis located

near the tendon of the omohyoid muscle

5

what does the ansa cervicalis directly innervate?

all the infrahyoid muscles except the nerve to the thyrohyoid

6

superior root of AC followed up to find what nerve which gives off what nerve

hypoglossal nerve
gives off nerve to thyrohyoid m

7

what is the landmark near the n to thyrohyoid

tip of hyoid bone in heart of carotid triangle

8

where does the the phrenic nerve cross and lie

crosses anterior scalene, posterior to IJC

9

what crosses over the phrenic nerve?

transverse cervical artery
suprascapular artery

10

what artery follows the phrenic nerve

ascending cervical artery

11

GSA fibers convey what info from where and localization?

pain, temp, tactile, pressure, proprioception by trigeminal nerve to structures of ectodermal origin
-sharp, highly localized sensations

12

General Visceral afferent fibers

visceral pain and reflexes
-vagus nerve distribution from posterior 1/3 of tongue to midportion of transverse colon
-dull achy, burning, poorly localized

13

General somatic efferent

innervate muscles of myotomic origin, extraocular m and intrinsic m of tnogue

14

general visceral efferent fibers

components of ANS and innervate SM and glands
-course with cranial nerves III,VII,IX,X

15

All GSA fibers from cranial nerves ______ terminate where?

V,VII,IX,X
trigeminal sensory nuclei

16

3 parts of trigeminal sensory nuclei and fnct

mesencephalic: proprioception info from facial muscles
main sensory nucleus: tactile discrimination info from face
descending nucleus of V: crude tactile, pain, temp from face

17

solitary nucleus or NTS recieves what fibers

GVA and SVA
GVA from posterior 1/3 of tongue to mid transverse colon
SVA taste anterior 2/3 via VII and 1/3 posterior tongue via IX, and epiglottis via X
-Vagus nerve is main input

18

motor nuclei fibers and what nucleus

GSE, muscles of myotomic origin
-oculomotor nucleus
-trochlear nucleus
abducens nucleus
-hypoglossal nucleus

19

SVE nuclei innervate muscles of what origin

branchiomeri (branchial arches)

20

trigeminal---> brachial arch __---> what muscles

brachial arch 1--> muscles of mastication

21

facial to what brachial arch to what muscles

brachial arch 2 to muscles of facial expression

22

nucleus ambiguus to what brachial arch to what muscles

arch 4 to pharyngeal and laryngeal muscles

23

Lesions of nerve IX result in what

loss of GDS
gag relex
slight dysphagia
loss sensation in pharynx and posterior 1/3 of tongue

24

lesions in cranial nerve X results

dysphonia
dysphagia
dyspnea
loss of gag or cough reflex

25

lesion in accessory nerves

inability to shrug the shoulder and flex and rotate head

26

lesion of cranial nerve XII results

deviation of protruded tongue towards affected side

27

common characteristics of cranial nerves IX-XII

they all exit skull at jugular foramen and are at base of skull between IJV and ICA
-deep to parotid gland at neck of mandible

28

vernet's syndrome

basilar skull fracture involving jugular foramen = ipsilateral IX,X,XI paralysis

29

collet's or sicard's syndrome

inury to retroparotid space
-paralysis of cranial nerves IX-XII and cervical sympathetic trunk (horner's syndrome)