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PNS > Midterm 2 > Flashcards

Midterm 2 Flashcards

1
Q

Name the 3 cords of the brachial plexus

A
  • medial
  • lateral
  • posterior
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2
Q

cords are named in reference to relationship with major artery _____

A

axillary

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3
Q

T/F

Musculocutaneous nerve runs from the medial cord

A

false

lateral cord

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4
Q

musculocutaneuos nerve roots

A

C5 to C6

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5
Q

What type of sensation does musculocutaneous have and where -

A
  • General sensation (

- medial aspect of forearm

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6
Q

T/F

Musculocutaneous receives pain, temperature, pressure , touch

A

True

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7
Q

name the muscles that the musculocutaneous innervates

A
  • Coracobrachials
  • Brachialis
  • Biceps Brachii
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8
Q

Ulnar is from the ____ cord

A

medial

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9
Q

T/F

the ulnar nerve innervates pronator trees only in the arm

A

false

no arm innervation

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10
Q

T/F

The ulnar nerve passes down the medial aspect of the arm , around the medial epicondyle through the ulnar sulcus

A

True ulnar sulcus AKA ulnar groov

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11
Q

What does the ulnar nerve innervate

A

medial flexor digitorum profundus

  • intrinsic muscles of the hand and skin
  • medial one and half digit
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12
Q

Median formed from contribution of ___ and ___

A

medial and lateral cord

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13
Q

nerve roots of median nerve

A

C6 to T1

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14
Q

Median nerve takes care of which type of muscle group

A

flexor/ pronator group and handles thenar eminence

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15
Q

Axillary nerve roots

A

C5 to C6

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16
Q

which nerve is restricted to the shoulder region

A

axillary

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17
Q

which muscles does the axillary n innervate

A
  • Glenohumeral joint
  • Deltoid
  • Teres minor
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18
Q

Axillary travels with the ______ _____ artery and travels around _______ ____ ___

A
  • posterior humeral circumflex

- surgical neck of humerus

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19
Q

Axillary goes through what anatomical space

A

quadrangular space

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20
Q

Radial nerve roots

A

C5 to T1

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21
Q

which is know as the largest nerve of the brachial plexus

A

radial

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22
Q

Long thoracic nerve roots

A

C5 to C7

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23
Q

where does the long thoracic nerve go to

A

chest wall

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24
Q

what is the function of the long thoracic nerve

A

keep scapula pulled up against chest wall

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25
Q

which enervates the serratus anterior

A

long thoracic nerve

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26
Q

damage to long thoracic nerve can lead to what syndrome

A

winging of the medial border

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27
Q

Dorsal scapular nerve roots

A

C5 only

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28
Q

dorsal scapular handles what two muscles

A
  • levator scapulae

- rhomboid

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29
Q

Nerve to subclavius nerve root

A

C5 to C6

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30
Q

what does the nerve to subclavius supply

A

sternoclavicular joint

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31
Q

Suprascapular nerve roots

A

C5 to C6

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32
Q

Suprascapular nerve innervates

A
  • supraspinatus and infraspinatus
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33
Q

T/F

Both medial and lateral pectoral nerves come off posterior cord

A

false

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34
Q

which nerves handles subscapularis

A

lower and upper sub scapular nerves

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35
Q

Middle subscapular nerve AKA

A

thoracodorsal nerve

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36
Q

Thoracodorsal nerve from ___ cord

A

C5 to C8

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37
Q

which muscles are innervated by thoracodorsal nerve

A

latissimus dosi

- sbscapularis

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38
Q

Thoracodorsal nerve roots

A

C5 to C8

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39
Q

Medial brachial cutaneous nerve root

A

C8 to T1

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40
Q

what does the medial brachial cutaneous nerve innervate

A

skin, hair, autonomic system and glands on arm

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41
Q

medial antebrachial cutaneous nerve

A

skin , hair, autonomic system and glands on anti brachial

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42
Q

which nerve is the first to get ripped off during dissection

A

intercostobrachial nerve

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43
Q

which nerve is cutaneous innervation of skin on chest wall

A

intercostobrachial nerve

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44
Q

T/F

one of the most injured nerve is the musculocutaneous

A

false

rarely injured because of protected position

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45
Q

T/F

Musculocutaneous nerve is a better supinator than supinator muscle

A

True

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46
Q

Elbow flexion and elbow supination weakness shows injury to which nerve

A

musculocutaneous

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47
Q

what type of injuries can cause damage to the axillary nerve

A
  • dislocation of the shoulder joint

- with fracture of surgical neck

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48
Q

what are some signs that there is damage to the axillary nerve

A
  • inability to abduct arm at GH joint

- Supraspinatus recruited

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49
Q

Which nerve has no humeral branches

A

Ulnar nerve

50
Q

Ulnar supplies innervation to
Muscles in forearm:
Muscles in Hand

A
  • Flexor carpi ulnaris
  • 1/2 of flexor digitorum profundus
  • hypothenar eminence:
  • Palmaris brevis
  • abducyor digit minimi
  • Opponens digiti minimi
  • Flexor digiti minimi
  • Dorsal interossei
  • Palmar interossei
  • Lumbricales 3 and 4
  • Flexor pollicis brevis
51
Q

What type of injury can cause damage to the ulnar nerve

A
  • at elbow- fracture of medial epicondyle

- at wrist - cuts and stab wounds

52
Q

There is carpal tunnel and thenar weakness and atrophy … pain and tingling… thumb and lateral 2 fingers cannot be flexed …. what nerve damage is this

A

Ulnar

53
Q

Flexion of terminal thumb phalanx

  • flexor pollicis longus paralyzed
  • thenar eminence muscles paralyzed
  • thumb laterally rotated and adducted
  • flattened palm of hand with all finger in same plane including thumb … what type of deformity is this
A

Ape and deformity

54
Q

T/F

Erb’s palsy is a lower brachial plexus root injury

A

false

upper root injury

55
Q

what is the cause of Erb’s palsy

A

injury during birth process - retraction
- causes hyperabduction of upper extremities

  • Shoulder is pulled in depression
  • neck is pushed in lateral flexion
  • stretched C5 to C6 plexus root
56
Q

T/F

most common area is C5 to C6 to tear in Erbs Palsy

A

True

57
Q
  • rider hits curb , thrown from cycle and shoulder makes contact with ground, side of head makes contact with ground , impact opens angle between neck and shoulder and stretches C5 to C6 plexus roots

what type of deformity can happen from this accident

A

Waiter’s tip

58
Q

describe the deformity of waiter’s tip

A
  • abductor and flexor of upper arm affected
  • arm bangs
  • adducted shoulder
  • Medially rotated arm
  • extended elbow
  • flexed wrist
59
Q

Dorsal Scapular exits between ___ and ___ scalene alone the _____ of the scapula

A
  • posterior and medial

- medial border

60
Q

Name the borders of the Quadrangular space

A
  • teres minor
  • trees major
  • Long head tricep
  • Surgical neck of humerus
61
Q

Meidal pectoral lies ___ to the lateral pectoral nerve

A

lateral

62
Q

which nerve is the smallest of brachial plexus nerves

A

medial cutaneous brachial

63
Q

______ communicates with the intercostobrachial nerve

A

medial cutaneous brachial nerve

64
Q

_____ runs with the ulnar nerve

A

medial cutaneous antebrachial

65
Q

list all the posterior branches of the brachial plexus

A
  • Upper subscapular C5 - C6
  • Lower sub scapular C5-C6
  • Thoracodorsal C6-C8
  • Axillary C5 -C6
  • Radial C5- T1
66
Q

Lumbar Plexus roots

A

L1-L4

67
Q

Lumbar terminal branches are derived from _____

A

ventral rami

68
Q

_____ nerve is the cutaneous innervations over the lateral hip

A

Subcostal nerve T12

69
Q

______ nerve is anterior to quadratus lumborum

A

Iliohypogastric ner L1

70
Q

List the innervations of iliohypogatric nerve

A
  • Cut. innervations over superolateral buttock
  • internal and external oblique abdominal muscles
  • intercostals
71
Q

List ilioinguinal L1 innervations

A
  • cutaneous innervations over medial femoral triangle
  • muscles of the abdominal wall and intercostals
  • runs toward inguinal canal
72
Q

______ nerve (L1-L2) Pierces the Psoas Major muscles

A

-Genitofemoral nerve

73
Q

Genitofemoral

name the femoral branch innervation

A

over lateral femoral triangle

74
Q

Genital br of Genitofemoral nerve innervation

A
  • over scrotum or labia major
  • innervates cremasteric muscle
  • travels with spermatic cord or roux ligament
75
Q

Lateral Femoral Cutaneous nerve root

A

L2-L3

76
Q

____ is the largest of the Lumbar Plexus

A

Femoral L2 - L4

77
Q

T/F

Femoral nerve appears from the medial side of the Psoas Major

A

False

lateral side

78
Q

Femoral nerve passes deep to ________

A

inguinal ligament

79
Q

List the femoral nerve innervations

A
  • iliacus and pectineus

- all anterior thigh muscles

80
Q

name the branch of the femoral nerve and its innervation

A
  • saphenous nerve
  • cutaneous innervation over medial leg and foot
  • L2-L4
81
Q

Obturator nerve root

is L2- L3

A

False

L2- L4

82
Q

List the innervations of the anterior div for obturator nerve

A
  • adductor longus
  • adductor brevis
  • Gracilis
83
Q

List the Posterior division of obturator nerve innervations

A
  • Obturator externa

- adductor magnus

84
Q

which nerve is rare and that 10 -30% people have it

A

accessory obturator L3-L4

85
Q

Obturator nerve appears from the ___ side of the Psoas Major

A

medial

86
Q

Lumbosacral trunk L2-L5

T/F

A

False

L4- L5

87
Q

T/F

Lumbosacral trunk is part of the sacral plexus

A

true

88
Q

Sacral plexus roots

A

L4 - S3

89
Q

Superior Gluteal nerve goes over ___

A

piriformis

90
Q

Superior Gluteal nerve root

A

L4- S1

91
Q

name the superior Gluteal nerve innervations

A
  • gluteus medius and minimus

- tensor fascia lata

92
Q

T/F

inferior gluteal nerve goes over the piriformis

A

flase
it goes underneath
the superior goes over piriformisa

93
Q

inferior gluteal nerve root

A

L5- S2

94
Q

Gulteus max is innervated by which nerve

A
  • inferior glteal
95
Q

Posterior femoral cutaneuos nerve root and innervation

A

S1-S3

- over posterior thigh and popliteal fossa

96
Q

Inferior Cluneal nerve root and innervations

A

S2- S3

- cutaneous to inferior buttocks

97
Q

L1 -L3
cuteanous innervation over superior buttocks
what is this nerve

A

superior cluneal

98
Q

Medial cluneal nerve root and innervation

A

S1, S3

cutaneous over medial buttocks

99
Q

what are considered to be nerves to the lateral rotators

A
  • nerve to quadratus femoris and inf gemellus
  • nerve to obturator internus and superior gemellus
  • nerve to piriformis
100
Q

Tibial nerve is ___ division of L4-S1

A

anterior

101
Q

medial plantar nrve is cutaneous innervation over medial sole and medial ___ toes

A

3/12

102
Q

Lateral Plantar cutaneous innervation over lateral sole and

A

lateral 1 and 1/2 toes

103
Q

Common perineal is ___ division of L4-S1

A

posterior

104
Q

name the branches of the common perineal nerve

A
  • superficial peroneal
  • deep perineal
  • recurrent genu
  • sural
105
Q

Deep perineal nerve runs with ___

A

anterior tibial artery

106
Q

Recurrent genu nerve innervates what

A
  • knee capsule
  • menisci
  • collateral lig
107
Q

Sural nerve is cutaneous innervation of ____ leg and — toe

A

posterolateral leg

lateral toe

108
Q

pudenal nerve passes over which ligament

A

sacrospinous ligament

109
Q

Pudendal nerve innervates what and what are the nerve roots

A

S2-S4

- Perineum

110
Q

what nerves pass through femoral triangle

A
  • femoral
  • obturator
  • lat femoral cut/
111
Q

only nerve to appear on the medial side of the psoas major

A

obturator

112
Q

what comes out of lateral side psoas major and crosses over onto the quadrates lumborum

A

iliohypogastric

113
Q

gammas go to ?

A

muscle spindle

114
Q

T/F

ansa cervicalis lies deep to cortid sheath

A

false

lies superficial

115
Q

superior root of ansa cervicalis runs wit what nerve

A

hypoglossal nerve

116
Q

which nerve innervated by spinal accessory nerve

A

SCM (C2, C3)

_ Trapezoius — C3, C4

117
Q

Phrenic nerve nerve roots

innervate what `

A

c3- c5

diaphragm

118
Q

Great auricular C2- C3

A

true

119
Q

DRG consists of what type of cell body

A

Pseudo unipolar

120
Q

Lumbar Cistern L2- S2

A

true

PNS (3 decks)

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