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4 star topic: one question on test > brachial plexus > Flashcards

brachial plexus Flashcards

1
Q

innervates serratus anterior m. (hold scapula to thorax)

A

long thoracic nerve

SALT: Serratus Anterior Long Thoracic

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2
Q

innervates infraspinatous + supraspinatous m.

A

suprascapular nerve

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3
Q

innervates pectoralis major m.

A

lateral pectoral nerve

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4
Q

innervates subscapularis m.

A

upper subscapular nerve

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5
Q

innervates latismus dorsi m.

A

thoracodorsal nerve.

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6
Q

innervates teres major

A

lower subscapular nerve

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7
Q

major flexors of forearm+ supinators:

biceps m., coracobrachialis m., brachialis m. (flexes + supinates forearm)

A

motor innervation of musculocutaneous nerve

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8
Q

deltoid (abducts shoulder)
long head of triceps (extends forearm)
teres minor m. (externally rotates arm)

A

motor innervation of axillary nerve

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9
Q

motor innervation of radial nerve

A

BEST: many of extensors + supinators
Brachioradialis (FLEXES forearm, supinates, pronates)
Extensor carpi radialis longus (extend wrist), Extensor digitorum, extensor pollicis longus + other extensors (extends wrist + digits)
Supinator (supinates)
Triceps (extends forearm)

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10
Q

many of flexors of hand:
pronators teres + pronators quadratus (pronate hand)
flexor carpi radialis + palmaris longus (flexes forearm)
flexor digitorum superficialis and lateral half of flexor digitorum profundus (flexes wrist + digits)
flexor pollicis longus (flexes thumb)
1st + 2nd lumbricals (flexes MCP joints and extends IP joints)

A

motor innervation of median nerve

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11
Q

flexor carpi ulnaris m. (flex + adduct wrist
flexor digitorum profundus m. (flex wrist + fingers)
hypothenar m. (controls hand + 5th digit-pinky)
3rd+4th lumbricals (flexes at MCP and extends at interphalangeal joints)
interosseous m. (abducts + adducts digits)
adductor pollicis (adducts thumb)

A

motor innervation of ulnar nerve

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12
Q

holds scapula to thorax

A

serratus anterior m.

originates on ribs 1-8, inserts on medial border of scapula

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13
Q

external rotation of humerus

A

infraspinatous m. (posterior scapula)

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14
Q

abduct arm

A

supraspinatous m.

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15
Q

flexion
adduction
medial rotation of humerus

A

pectoralis major m.

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16
Q

internal rotation of arm

A

subscapularis m. (fills subscapular fossa, anterior scapula)

inserts in lesser tubercle of humerus

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17
Q 
extension
adduction
transverse extension
flexion from an extended position
internal rotation
A

latissimus dorsi m.

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18
Q

medial rotation

adduction of arm

A

teres major m. (originates on dorsal surface of inferior angle of scapula, inserts on medial lip of intertubercle sulcus of humerus)

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19
Q

major flexors of arm + forearm

A

biceps m. + coracobrachialis m. + brachialis m.

major flexors of arm + forearm

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20
Q

abduct (esp frontal plane)

A

deltoid m.

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21
Q

lateral rotation of humerus

A

teres minor m.

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22
Q

extend forearm

A

extensors + tricep m.

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23
Q

pronate arm

A

pronators + thenar m.

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24
Q

flex

adduct hand

A

flexor carpi ulnaris m.
interosseus m.
hypothenar m.

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25
injury to C5-C6 nerve roots or superior trunk
Erb-Duchenne Palsy (Waiter's tip syndrome)
26
neck or shoulder traumatized dystocia during delivery (large for GA) pulling on shoulders during cephalic delivery newborn with clavicle fracture (may not be due to a dystocia) partial or complete paralysis of UE bruising, stretching (usually reversible) or tearing of nerves
Erb-Duchenne Palsy (Waiter's tip syndrome)
27
most common nerves affected + symptoms in Erb-Duchenne Palsy (Waiter's tip syndrome)
loss of sensation of UE no abduction = adducted: suprascapular n - supraspinatous m., axillary n. - deltoid m. no lateral rotation = medial rotated: suprascapular n. - infraspinatous m. no flexion + supination = extended + forearm pronated: musculocutaneous n. - biceps m.
28
injury to C8-T1 roots or inferior trunk
Klumpke palsy
29
cervical rib compressing inferior trunk cervical rib compressing inferior trunk + subclavian artery →thoracic outlet syndrome hypertrophy of anterior scalene m. → thoracic outlet syndrome
Klumpe palsy
30
nerves injured + symptoms of Klumpke palsy
atrophy of: thenar eminence hypothenar eminence: ulnar n. interosseous muscle: ulnar n. sensory deficits on medial side of forearm + side of hand no radial pulse with moving head toward ipsilateral side (thoracic outlet syndrome)
31
sensory innervation of: posterior arm dorsal side of hand
radial nerve
32
wrist drop difficulty straightening fingers numbness on back of hand + posterior arm weak brachioradialis reflex
radial nerve injury: "saturday night palsy" radial nerve compression or fracture of SHAFT of humerus
33
wrist drop
radial nerve injury
34
HAND ONLY: sensory innervation of 5+ one-half of 4th digit medial side of palm and dorsal hand
ulnar nerve
35
loss of flexion of wrist + digits
PROXIMAL injury to ulnar nerve (flexor carpi ulnaris + flexor digitorum profundus)
36
MCP joint hyperextension and IP joint flexion at 4th + 5th digitis loss of abduction + adduction of digits hypothenar wasting
DISTAL injury to ulnar nerve: "ulnar claw" (lose 3rd + 4th lumbricals) no abduction/adduction (interosseous)
37
sensory innervation of: | lateral palm + first 3 ½ digits
median nerve
38
loss of thumb abduction
median nerve injury AT THE ELBOW (no thenar m.) | "ape hand"
39
loss of flexion of 2nd + 3rd digits (index + middle)
median nerve injury AT OR ABOVE ELBOW: | "hand of benediction"
40
intermittent numbness of first 3 1/2 digits (thumb to 1/2 of ring finger) at night or when typing (compression) severe: atrophy of thenar m., weakness of palmar adduction/abduction
median nerve injury: | carpal tunnel syndrome
41
sensory innervation of: | lateral side of forearm
musculocutaneous nerve
42
sensory innervation of: | lateral shoulder
axillary nerve
43
loss of elbow flexion + supination of forearm
musculocutaneous nerve injury
44
loss of abduction of shoulder weak flexion, extension, rotation of shoulder loss of sensation to lateral shoulder
axillary nerve injury: | anterior dislocation of shoulder OR fracture of surgical NECK of humerus
45
artery that runs with axillary nerve
posterior circumflex artery
46
winged scapula
long thoracic nerve injury: | blow to neck or shoulder OR after radial mastectomy
47
structures in anterior triangle of neck
posterior digastric m. sternothyroid m. sternohyoid m. (lateral to sternothyroid) superior omohyoid m. (lateral to sternohyoid)
48
structures in posterior triangle of neck
brachial plexus subclavian vein (mid-clavicle) external jugular vein inferior omohyoid m.
49
unable to wipe bottom
thoracodorsal nerve injury
50
loss of forearm pronation
median nerve injury
51
weak external rotation of arm
suprascapular nerve injury (infraspinatous m.) + axillary nerve (deltoid m.)
52
supracondylar humerus fracture
median nerve
53
artery travels with radial nerve
deep brachial artery
54
nerve travels with anterior interosseous artery
anterior interosseous nerve
55
nerve travels with posterior interosseous artery
deep branch of radial nerve
56
nerve travels with suprascapular artery
suprascapular nerve
57
nerve travels with thoracodorsal artery
thoracodorsal nerve
58
nerve travels with dorsal scapular artery
dorsal scapular nerve
59
nerve travels with lateral thoracic artery
long thoracic nerve
60
nerve travels with ulnar artery
ulnar nerve
61
nerve travels with brachial artery
medial nerve

4 star topic: one question on test (22 decks)

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