B6-003 Shoulder, Axilla and Arm

Question 1

the trapezius is innervated by

Answer 1

spinal accessory

Question 2

the latissimus dorsi is innervated by

Answer 2

thoracodorsal

Question 3

what muscles make up the rotator cuff? [4]

Answer 3

supraspinatus
infraspinatus
teres minor
subscapularis

Question 4

what muscles provides the first 15 degrees of arm abduction?

Answer 4

supraspinatus

Question 5

what muscle[s] provide lateral (external) rotation of the arm?

Answer 5

infraspinatus
teres minor

Question 6

what muscle[s] provide medial (internal) rotation of the arm?

Answer 6

subscapularis

Question 7

which muscle of the rotator cuff is located on the lesser tubercle of the humerus?

Answer 7

subscapularis

**the rest are on the greater tubercle

Question 8

bursitis of the […] would cause painful abduction of the arm

Answer 8

subacromial bursa

Question 9

weakness in external rotation would indicate an issue with which muscles?

Answer 9

teres minor
infraspinatus

Question 10

the drop arm test tests which muscle?

Answer 10

supraspinatus

Question 11

Gerber’s tests which muscle?

Answer 11

subscapularis

**lift off test

Question 12

the empty can test (Jobe’s) tests which muscle?

Answer 12

supraspinatus

Question 13

the inferior truck of the brachial plexus is in close proximity to […]

Answer 13

1st rib

**issue in thoracic outlet syndrome

Question 14

the medial and lateral cords of the brachial plexus innervate […]

Answer 14

flexors

Question 15

the posterior cord of the brachial plexus innervates […]

Answer 15

extensors

Question 16

the cords of the brachial plexus are named for their relationship to the

Answer 16

axillary artery

Question 17

the roots of the brachial plexus are located between

Answer 17

anterior and middle scalene muscles of neck

Question 18

the trunks of the brachial plexus lie in the

Answer 18

root of the neck

Question 19

the divisions of the brachial plexus lie posterior to

Answer 19

clavicle

Question 20

the cords of the brachial plexus lie around the

Answer 20

axillary artery

Question 21

the subclavian a. turn into the […] at the lateral border of the […]

Answer 21

axillary
1st rib

Question 22

the axillary a. turns into the […] at the inferior border of […]

Answer 22

brachial
teres major

Question 23

the thoraco-acromial trunk of the axillary a. supplies [4]

Answer 23

acromian
clavicle
pec major
deltoid

Question 24

the lateral thoracic branch of the axillary a. supplies

Answer 24

serratus anterior

Question 25

the thoracodorsal a branches off […] and supplies […]

Answer 25

subscapular branch of axillary
latissimus dorsi

Question 26

the axillary vein branches into [2]

Answer 26

basilic
cephalic

Question 27

the brachial artery runs with the […] nerve

Answer 27

median

Question 28

the axillary nerve runs with the […] artery

Answer 28

posterior circumflex humeral

**quadrangular space

Question 29

the thoracodorsal artery and nerve supply the

Answer 29

lattisimus dorsi

Question 30

what landmarks make up the quadrangular space [4]

Answer 30

teres minor
teres major
long head of triceps
surgical neck of humerus

Question 31

what neurovascular structures run through the quadrangular space?

Answer 31

axillary nerve
posterior circumflex artery

Question 32

what landmarks make up the triangular interval? [3]

Answer 32

teres major
long head of triceps
shaft of humerus

Question 33

what neurovascular structures run through the triangular interval?

Answer 33

radial nerve
profunda brachii a.

Question 34

what neurovascular structures can be damaged with a midshaft humerus fracture?

Answer 34

radial nerve
profunda brachii a.

Question 35

the scapular notch can ossify, entrapping what nerve?

Answer 35

suprascapular nerve

Question 36

the suprascapular artery runs over the […], and the suprascapular nerve runs under

Answer 36

superior transverse scapular ligament

**army over navy

Question 37

the superior ulnar collateral a. travels with the

Answer 37

ulnar n.

Question 38

the ulnar n. travels close to which bony structure?

Answer 38

medial epicondyle

Question 39

the profunda brachii a runs with what nerve?

Answer 39

radial

Question 40

in the cubital fossa, the brachial a. branches into

Answer 40

radial a.
ulnar a.

Question 41

where does the brachial artery branch?

Answer 41

cubital fossa

**usually, sometimes branches in axilla

Question 42

the lateral thoracic a. and the […] run together to supply serratus anterior

Answer 42

long thoracic n.

Question 43

what neurovascular structures supply the serratus anterior?

Answer 43

lateral thoracic a.
long thoracic n.

Question 44

what is the nerve injury that can result from a proximal humerus fracture?

Answer 44

axillary nerve lesion

Question 45

what nerve supples the anterior compartment of the arm?

Answer 45

musculocutaneous

Question 46

what nerve supplies the posterior compartment of the arm?

Answer 46

radial

Question 47

the medial and lateral [….] separate the arm into the anterior and posterior compartments

Answer 47

intermuscular septa

Question 48

the […] vein courses deep to the brachial fascia in the proximal arm

Answer 48

basilic

Question 49

the […] vein is always superficial to the brachial fascia

Answer 49

cephalic

Question 50

the […] v. serves as a landmark for the lateral side of the arm

Answer 50

cephalic

Question 51

the […] vein serves as a landmark for the medial side of the arm

Answer 51

basilic

Question 52

describe lymphatic drainage on the radial (thumb) side of the upper limb

Answer 52

cephalic vein to deltopectoral nodes

Question 53

describe the lymphatic drainage on the ulnar (pinky) side of the upper limb

Answer 53

follows basilic vein to cubital nodes, then to axillary nodes –> central –> apical –> clavicular —> subclavian –> thoracic or right lymphatic

Question 54

breast cancer in the upper outer quadrant of the breast would spread along what lymphatic pathway?

Answer 54

pectoral –> central –> apical –> clavicular –> subclavian —> thoracic or right lymphatic

Question 55

what nerve can be injured during a breast cancer biopsy, deinnervating serratus?

Answer 55

long thoracic n.

Question 56

a lesion in […] would cause weakness in protraction of the scapula and
weakness in abduction above 90 degrees

Answer 56

long thoracic n.

Question 57

a lesion in […] would cause weakness of arm extension, adduction, and medial rotation

Answer 57

thoracodorsal n.

Question 58

a lesion in what nerve causes winged scapula?

Answer 58

long thoracic n.

Question 59

[…] and […] rotate the scapula for abduction above 90 degrees

Answer 59

trapezius and serratus anterior

Question 60

ossification of the scapular notch can entrap what nerve?

Answer 60

suprascapular

Question 61

suprascapular nerve supplies what muscles?

Answer 61

supra and infra spinatus

Question 62

a lesion in […] would cause weakness initiating abduction and lateral rotation

Answer 62

suprascapular n.

Question 63

dorsal scapular nerve supplies which muscles?

Answer 63

levator scapulae
rhomboid major and minor

Question 64

a lesion in […] would cause weakness in elevation, retraction, and downward rotation of the scapula

Answer 64

dorsal scapular nerve

Question 65

what muscle initiates abduction of the arm?

Answer 65

supraspinatus

Question 66

what muscle laterally rotates the arm?

Answer 66

infraspinatus
teres minor

Question 67

innervates the muscles of the anterior compartment of the arm to provide flexion and supination

Answer 67

musculocutaneous

Question 68

the musculocutaneous n pierces the […]

Answer 68

coracobrachialis

**can become entrapped here

Question 69

provides sensory to the lateral forearm

Answer 69

musculocutaneous

**gives rise to lateral cutaneous branch at elbow

Question 70

the […] passes through the quadrangular space along with the posterior circumflex humoral artery

Answer 70

axillary nerve

Question 71

what nerve lies in contact with the surgical neck of the humerus?

Answer 71

axillary

**can be compressed with fractures

Question 72

provides sensory over the lateral deltoid

Answer 72

axillary nerve

Question 73

the median nerve crosses over the brachial artery at what anatomical landmark?

Answer 73

cubital fossa

Question 74

pronator teres syndrome compresses the […] nerve

Answer 74

median

Question 75

what nerve passes between the humeral and ulnar heads of the pronator teres?

Answer 75

median

**pronator teres syndrome

Question 76

what nerve is compressed in carpal tunnel syndrome?

Answer 76

median

Question 77

what nerve provides sensory to the lateral 3.5 digits?

Answer 77

median

Question 78

what nerve innervates the nail beds?

Answer 78

median

Question 79

what nerve passes posterior to the medial epicondyle of the humerus?

Answer 79

ulnar

Question 80

what nerve causes cubital tunnel syndrome when compressed?

Answer 80

ulnar

Question 81

what nerve is frequently injured in a fall on an outstretched hand?

Answer 81

ulnar

**passes through pisiform and hook of hamate

Question 82

structure between pisiform and hook of hamate

Answer 82

Guyon canal

**ulnar n. passes through here, injured in FOOH

Question 83

provides sensory to little and ring finger

Answer 83

ulnar

Question 84

innervates the posterior (extensor) compartments of the arm and forearm

Answer 84

radial

Question 85

what nerve can become entrapped if the supinator spasms?

Answer 85

radial

Question 86

provides sensory to the dorsum of the hand

Answer 86

radial

Question 87

C5-C6

Answer 87

axillary

Question 88

C5-C7

Answer 88

musculocutaneous

Question 89

C5-T1

Answer 89

radial
median

Question 90

C8-T1

Answer 90

ulnar

Question 91

C5-T1

Answer 91

recurrent branch of the median nerve

Question 92

an anterior dislocation of the humerus could injure what nerve?

Answer 92

axillary

Question 93

upper trunk compression could injure what nerve?

Answer 93

musculocutaneous

Question 94

compression of the axilla due to crutches or sleeping with arm over a chair could injure what nerve?

Answer 94

radial

Question 95

a midshaft fracture of the humerus could injure what nerve?

Answer 95

radial

Question 96

repetitive pronation/supination such as screwdriver use could injure what nerve?

Answer 96

radial

Question 97

a supracondylar fracture of the humerus could injure what nerve?

Answer 97

median

Question 98

a wrist laceration could injure what nerve?

Answer 98

median

Question 99

fracture of the medial epicondyle of the humerus could injure what nerve?

Answer 99

ulnar

Question 100

a fractured hook of hamate from a fall on outstretched hand could injure what nerve?

Answer 100

ulnar

Question 101

compression of the nerve against hamate as the wrist rests on handlebars during cycling could injure what nerve?

Answer 101

ulnar

Question 102

a superficial laceration of the palm could injure what nerve?

Answer 102

recurrent branch of the median

Question 103

what nerve injury would cause:
flattened deltoid
loss of arm abduction >15 degrees
loss of sensation over deltoid and lateral arm

Answer 103

axillary

Question 104

what nerve injure would cause:
decreased biceps reflex
loss of forearm flexion and supination
loss of sensation over radial and dorsal forearm

Answer 104

musculocutaneous

Question 105

most common rotator cuff injury

Answer 105

supraspinatus

Question 106

what rotator cuff muscle is affected in a pitching injury?

Answer 106

infraspinatus

Question 107

adducts and externally rotates arm

Answer 107

teres minor

Question 108

internally rotates and adducts arm

Answer 108

subscapularis

Question 109

provides first 0-15 degrees abduction

Answer 109

supraspinatus

Question 110

provides 15-90 degrees abduction

Answer 110

deltoid

Question 111

provides greater than 90 degrees abduction

Answer 111

trapezius
serratus anterior

Question 112

long thoracic n. innervates

Answer 112

serratus anterior

Question 113

accessory n. innervates

Answer 113

trapezius

Question 114

axillary n. innvervates

Answer 114

deltoid

Question 115

suprascapular n. innervates

Answer 115

supraspinatusand infraspinatus

Question 116

what nerve/artery pair travels through the axilla?

Answer 116

long thoracic n.
lateral thoracic a.

Question 117

what nerve/artery pair travels through the surgical neck of the humerus?

Answer 117

axillary n.
posterior circumflex a.

Question 118

what nerve/artery pair travels through the midshaft of the humerus?

Answer 118

radial n.
deep brachial a.

Question 119

what nerve/artery pair travels through the distal humerus/cubital fossa?

Answer 119

median n.
brachial a.

Question 120

what syndrome is caused by ulnar nerve compression at the wrist and is commonly associated with cyclists?

Answer 120

guyon canal syndrome

Question 121

the […] is in contact with the surgical head of the humerus and can be damaged by fracture or shoulder dislocation

Answer 121

axillary nerve

Question 122

what nerve is vulnerable during a supracondylar humerus fracture?

Answer 122

median

Question 123

the median nerve can become entrapped by […]

Answer 123

pronator teres

Question 124

what nerve can be injured during a mid-shaft humerus fracture?

Answer 124

radial

Question 125

formed by the pisiform bone and hook of hamate

Answer 125

Guyon’s canal

**ulnar nerve can be entrapped here

Question 126

the […] nerve can be entrapped as it passes through the coracobrachialis

Answer 126

musculocutaneous

Question 127

innervates pectoralis major

Answer 127

lateral pectoral nerve

Question 128

the lateral pectoral nerve branches from the

Answer 128

lateral cord

Question 129

what neurovascular structures pass through the quadrangular space?

Answer 129

axillary nerve
posterior circumflex a.

Question 130

the axillary nerve and the posterior circumflex are in contact with the

Answer 130

surgical neck of the humerus

Question 131

most likely to be torn in a rotator cuff injury

Answer 131

supraspinatus

Question 132

initiates the first 15 degrees of arm abduction

Answer 132

supraspinatus

Question 133

medial rotators of arm [2]

Answer 133

subscapularis
teres major not a rotator cuff muscle though

Question 134

lateral rotators of arm [2]

Answer 134

infraspinatus
teres minor

Question 135

lymph from the upper outer quadrant of the breast will drain into the

Answer 135

anterior axillary nodes

Question 136

infection or cancer on the thumb side will follow the […] vein and drain into […] nodes

Answer 136

cephalic
infraclavicular (deltopectoral or apical axillary)

Question 137

infection or cancer from the 5th digit side will follow the […] vein and drain into the […] nodes

Answer 137

basilic
cubital

Question 138

associated with biceps tendonitis and relatively common in tennis and baseball players

Answer 138

torn long head of biceps

Question 139

what muscles make up the anterior axillary fold? [2]

Answer 139

pectoralis major and minor

Question 140

what muscles make up the posterior axillary fold? [3]

Answer 140

latissimus dorsi
teres major
subscapularis

Question 141

what muscle makes up the medial side of the axilla?

Answer 141

serratus anterior

Question 142

back muscle that elevates scapula

Answer 142

levator scapulae

Question 143

what neurovascular structures travel through the triangular interval?

Answer 143

radial nerve
profunda brachii

Question 144

the […] artery and nerve travel together to supply the latissimus dorsi

Answer 144

thoracodorsal

Question 145

the ulnar nerve lies posterior to the […]

Answer 145

medial epicondyle

Question 146

provides cutaneous sensation to the lateral area of the shoulder

Answer 146

axillary

Question 147

[…] nerve is vulnerable during shoulder dislocations

Answer 147

axillary

Question 148

the radial nerve provides cutaneous sensation to [2]

Answer 148

-posterior arm and forearm
-dorsum of lateral hand

Question 149

a positive response to myotatic biceps reflex confirms the integrity of

Answer 149

musculocutaneous n.

Question 150

supplies motor innervation and proprioception to anterior compartment of arm

Answer 150

musculocutaneous

Question 151

weakness flexing the elbow and supinating the forearm indicates a lesion in

Answer 151

musculocutaneous

Question 152

weakness in abduction past 15 degrees of the upper limb indicates a lesion in

Answer 152

axillary

Question 153

weakness in extension at the elbow and wrist indicates a lesion in

Answer 153

radial

Question 154

numbness and tingling over medial part of palm and medial 1.5 digits indicates damage to

Answer 154

ulnar nerve

Question 155

numbness and tingling of lateral forearm indicates damage to

Answer 155

musculocutaneous

Question 156

numbness and tingling over the lateral shoulder indicate damage to

Answer 156

axillary

Question 157

numbness and tingling over the lateral part of the palm and lateral 4.5 digits indicates damage to the

Answer 157

median nerve

Question 158

numbness and tingling over the posterior forearm and hand indicate damage to the

Answer 158

radial nerve

Question 159

-weakness of pronation
-flattening of thenar eminence
-numbness, tingling on palmar aspect of lateral fingers

Answer 159

median nerve entrapment by pronator teres

Question 160

what neurovascular structures are in contact with the shaft of the humerus?

Answer 160

radial nerve
profunda brachii

Question 160

what neurovascular structures pass through the quadrangular space?

Answer 160

axillary nerve
posterior circumflex a.

Question 161

what neurovascular structures pass through the quadrangular space?

Answer 161

axillary nerve
posterior circumflex a.

Question 161

what neurovascular structures are in contact with the shaft of the humerus?

Answer 161

radial nerve
profunda brachii

Question 162

what neurovascular structures pass through the quadrangular space?

Answer 162

axillary nerve
posterior circumflex a.

Question 163

what neurovascular structures are in contact with the shaft of the humerus?

Answer 163

radial nerve
profunda brachii

Question 164

what neurovascular structures pass through the quadrangular space?

Answer 164

axillary nerve
posterior circumflex a.

Question 164

what neurovascular structures are in contact with the shaft of the humerus?

Answer 164

radial nerve
profunda brachii

Question 165

what neurovascular structures are in contact with the shaft of the humerus?

Answer 165

radial nerve
profunda brachii

Question 165

what neurovascular structures pass through the quadrangular space?

Answer 165

axillary nerve
posterior circumflex a.

Question 166

what neurovascular structures are in contact with the shaft of the humerus?

Answer 166

radial nerve
profunda brachii

Question 166

what neurovascular structures pass through the quadrangular space?

Answer 166

axillary nerve
posterior circumflex a.

Question 167

C5 and C6 form the [….] trunk of the brachial plexus

Answer 167

upper

Question 168

C7 forms the […] trunk of the brachial plexus

Answer 168

middle

Question 169

C8 and T1 form the […] trunk of the brachial plexus

Answer 169

lower

Question 170

what 2 nerves does the posterior cord form?

Answer 170

axillary
radial

Question 171

the lateral cord forms the […] nerve

Answer 171

musculocutaneous

Question 172

the medial cord forms the […] nerve

Answer 172

ulnar

Question 173

branches of the lateral cord and medial cord join to form the […] nerve

Answer 173

median

Question 174

the dorsal scapular nerve branches off C5 and supplies motor for [2]

Answer 174

rhomboids
levator scapulae

Question 175

branches of C5-C7 join to form the […] nerve

Answer 175

long thoracic

Question 176

suprascapular branches from the […] trunk

Answer 176

upper

Question 177

suprascapular provides motor to [2]

Answer 177

supraspinatus
infraspinatus

Question 178

the lateral pectoral nerve branches from the […] cord

Answer 178

lateral

Question 179

the posterior cord forms 3 smaller branches

Answer 179

upper subscapular
thoracodorsal
lower subscapular

Question 180

does medial rotation of the scapula

Answer 180

subscapularis

Question 181

does extension, medial rotation, and adduction at the shoulder joint

Answer 181

latimus dorsii

Question 182

thoracodorsal n supplies

Answer 182

latismus dorsi

Question 183

does medial rotation of the shoulder joint

Answer 183

subscapularis

Question 184

does extension, medial rotation, and adduction at the shoulder joint

Answer 184

teres major
lattisimus dorsi

Question 185

musculocutaneous supplies motor to [3]

Answer 185

coracobrachialis
brachialis
biceps brachii

Question 186

musculocutaneous supplies sensory to

Answer 186

lateral forearm

Question 187

axillary supplies motor to [2]

Answer 187

deltoid
teres minor

Question 188

axillary supplies sensory to

Answer 188

posterior and lateral surface of deltoid

Question 189

radial nerve supplies sensory to [3]

Answer 189

posterior and lateral surface of the upper limb
dorsal and lateral surface of hand
pollex

Question 190

median supplies sensory to [2]

Answer 190

ventral and lateral surface of palm
ventral and dorsal surface digits 2 and 3

Question 191

ulnar nerve supplies sensory to

Answer 191

ventral and dorsal 1/3 of hand

Question 192

comes off the lateral cord of the upper trunk

Answer 192

musculocutaneous

Question 193

axillary comes off the […] of the middle trunk

Answer 193

posterior chord

Question 194

radial nerves comes off the […] of the middle trunk

Answer 194

posterior chord

Question 195

comes off the medial and lateral cords of the lower trunk

Answer 195

median

Question 196

comes off the medial cord of the lower trunk

Answer 196

ulnar