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PNS exam 2 > unit 5: spinal nerves, cervical plexus > Flashcards

unit 5: spinal nerves, cervical plexus Flashcards

1
Q

the cervical plexus is formed by ANTERIOR primary rami of:

A

C1-C4 spinal nerves

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2
Q

the nerve roots of the plexus form a series of communicating loops that communicate with these three CRANIAL nerves:

A

X (vagus)
XI (hypoglossal)
XII (accessory)

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3
Q

fibers from the inferior vagal ganglion communicate w/ the loop formed by
-vagus n. communication

A

C1 & C2

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4
Q

fibers from the spinal accessory n. carry proprioceptive info and communicate w/ the loop formed by (2 pairs):

A

C2 & C3

C3 & C4

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5
Q

in regards to the spinal accessory nerve, proprioceptive info is sent from the ____ to C2, and from _____ to C3 & C4

A

SCM

trapezius

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6
Q

the hypoglossal nerve communicates with __ fibers that later separate to become the:

A

C1

superior root of ansa cervicalis

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7
Q

C1 fibers that supply ___ & __ remain WITH the hypoglossal nerve (do not become ansa cervicalis)

A

thyrohyoid

geniohyoid

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8
Q

three gray rami communicans that carry postganglionic SYMPATHETIC fibers

A

vasomotor (VC/VD, BP)
sudomotor (increase sweat gland output)
pilomotor (erector pili, raise hair)

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9
Q

the loop between these two root pairs communicate with the gray rami communicans

A

C1 & C2

C3 & C4

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10
Q

LESSER OCCIPITAL nerve carries C2 fibers to supply:

A

superior 1/3 of auricle skin

skin behind ear

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11
Q

lesser occipital nerve communicates with these two nerves

A

greater occipital

great auricular

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12
Q

GREAT AURICULAR nerve carries fibers from __&__, and enters the ___ gland to divide into anterior and posterior branches

A

C2 & C3

parotid

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13
Q

the ___ branch of the great auricular nerve combines with the __ nerve to supply the skin over the parotid gland

A

anterior

facial

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14
Q

the ___ branch of the great auricular nerve supplies the skin over the mastoid process

A

posterior

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15
Q

TRANSVERSE CUTANEOUS nerve of the neck carries fibers from:

A

C2 & C3

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16
Q

the transverse cutaneous nerve of the neck divides into ascending & descending branches, that both supply the:

A

skin over platysma muscle

17
Q

the trunks from __&__combine to form a trunk that gives rise to the medial, intermediate, & lateral SUPRACLAVICULAR nerves

A

C3 & C4

18
Q

the MEDIAL supraclavicular nerve supplies the skin INFERIOR to the

A

sternal end of clavicle (as far inferior as rib 2)

19
Q

the INTERMEDIATE supraclavicular nerve supplies the skin over the

A

deltoid & pec major (as far inferior as rib 2)

20
Q

the LATERAL supraclavicular nerve supplies skin over the

A

superior & lateral aspects of the shoulder

21
Q

the 3 superficial branches of the cervical plexus

A

lesser occipital
greater auricular
transverse cutaneous of the neck

22
Q

the DEEP branches of the CP are divided into a __ & __ series

A

medial

lateral

23
Q

the (deep) LATERAL series of the CP passes into the posterior triangle and consists of ___ branches and __ branches

A

communicating

muscular

24
Q

within the lateral series, the __ __ nerve may receive communicating branches carrying sensory fibers from__-__

A

spinal accessory

C2-C4

25
Q

four muscles associated with the muscular branches of the lateral series

A

SCM
traps
levator scapula
middle scalene

26
Q

SCM receives proprioception from ___-___ and trapezius from ___
-deep lateral series muscular branches

A

C2-C4

C2 (perhaps C3)

27
Q

levator scapula (motor AND sensory) and middle scalene (motor only) are both innervated by __&__

A

C3 & C4

28
Q

the (deep) MEDIAL series passes into the ___ triangle & like the lateral series has both communicating and muscular branches in addition to the phrenic nerve

A

anterior

29
Q
  • bt vagus & loop bt C1 & C2
  • 3-4 gray rami communicans from sup cervical ganglion to upper 4 cervical nerves
  • fibers from C1 comm. w/ hypoglossal then separating to form sup root of ansa cervicalis
  • -these are all:
A

communicating branches of the (deep) medial series

30
Q

muscles supplied by the medial series muscular branches

A

rectus capitis lateralis
rectus capitis anterior
longus capitis
longus colli

31
Q 
branches that supply these muscles respectively:
rectus capitis lateralis:
rectus capitis anterior:
longus capitis:
longus colli:
A

C1
C1, C2
C1-C3
C2-C4

32
Q

within the medial series, branches from __ & __ combine to form the ___ root of the ansa cervicalis

A

C2 & C3

inferior

33
Q

muscles supplied by ansa cervicalis

A

sternohyoid
sternothyroid
omohyoid (both bellies)

34
Q

the ____ nerve is formed by C3, C4, & C5, and descends thru the neck, anterior to the __ __ muscle

A

phrenic

anterior scalene

35
Q

the phrenic nerve receives POSTganglionic sympathetic fibers from the ___ ganglia, and is the nerve supply to the ___

A

cervical

diaphragm

PNS exam 2 (9 decks)

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