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Pns > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

What makes up the lateral cord?

A

anterior divisions of superior and middle trunks. C5 C6 C7

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2
Q

What makes up the medial cord?

A

anterior division of the inferior trunk C8 T1

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3
Q

What makes up the posterior cord?

A

posterior division of all three trunks

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4
Q

Dorsal Scapular nerve

A

C5

levator scapula, rhomboid major and minor

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5
Q

Long Thoracic nerve

A

C5 C6 C7

serratus anterior

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6
Q

Suprascapular nerve

A

C5 C6

supraspinatus and infraspinatus

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7
Q

Nerve to subclavius

A

C5 C6

subclavius

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8
Q

Lateral Pectoral

A

C5 C6 C7

Pectoralis major

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9
Q

Musculocutaneous

A

C5 C6 C7

coracobrachialis, biceps brachii, brachialis

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10
Q

What muscle does the Musculocutaneous nerve pierce?

A

coracobrachialis

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11
Q

What branch comes off the the Musculocutaneous nerve between the biceps brachii and brachialis

A

Lateral cutaneous nerve of the forearm

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12
Q

Medial Pectoral

A

C8 T1

Pec major and minor

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13
Q

Medial cutaneous nerve of the arm

A

C8 T1

ramifies in the axilla and supplies skin of the medial arm between the axilla and elbow.

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14
Q

When the Medial cutaneous nerve of the arm receives fibers from T2

A

intercostobrachial nerve

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15
Q

Medial cutaneous nerve of the forearm

A

C8 T1

supplies skin over the biceps brachii, over anterior and medial aspects of forearm distal to the wrist

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16
Q

Ulnar

A

C8 T1 sometimes C7

gives off NO branches in the arm. Crosses in the medial epicondyle.

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17
Q

what two muscles does the ulnar nerve innervate in the forearm

A

flexor carpi ulnaris and medial half of flexor digitorum profundus

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18
Q

What two sensory branches does the ulnar nerve give off in the forearm

A

Dorsal and palmar

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19
Q

Dorsal branch of the ulnar nerve

A

supplies skin on the ulnar side of the posterior hand

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20
Q

Palmer branch of the ulnar nerve

A

supplies the skin over the hypothenar eminence

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21
Q

After the ulnar nerve travels deep to the flexor carpi ulnaris and superficial to the flexor retinaculum what two branches does it give off?

A

superficial and deep

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22
Q

Superficial branch of the ulnar nerve

A

divides into three branches supplying the palmar aspect of the little finger and medial half of the ring finger

23
Q

Deep branch of the ulnar nerve

A

supplies 7 muscles.
abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi, adductor pollicis, deep head of flexor pollicis brevis, all interossei, lumbricals 3 & 4

24
Q

Clinical considerations of the ulnar nerve

A

claw hand

25
Q

Median nerve

A

C6 C7 C8 T1
p3 f3
pronator teres, pronator quadratus, palmaris longus, flexor carpi radialis, flexor digitorum superficialis

26
Q

How is the pronator quadratus innervated

A

by way of the anterior interosseous nerve of the forearm

27
Q

Palmar branch of the median nerve is given off in the distal third of the forearm to supply

A

skin of the thenar eminence, lateral wrist and palm

28
Q

Palmar branch of the median nerve then divides into what two branches

A

common palmar digital nerve and proper palmar digital nerve

29
Q

common palmar digital nerve

A

divides into three branches to supply;

first two lumbricals, abductor policis brevis, flexor pollicis brevis, opponens pollicis

30
Q

proper palmar digital nerve

A

is sensory only to the skin over the lateral three and a half digits

31
Q

clinical considerations of the median nerve

A

hand of oath/benediction
carpal tunnel syndrome
unable to pronate

32
Q

Superior Subscapular nerve

A

C5 C6

subscapularis

33
Q

Inferior Subscapular nerve

A

C5 C6

subscapularis and teres major

34
Q

Thoracodorsal nerve

A

C6 C7 C8

latissimus dorsi

35
Q

Axillary nerve

A

C5 C6

deltoid and teres minor

36
Q

At the teres minor the axillary nerve gives off what branches

A

superior lateral cutaneous nerve of the arm. supplies skin over the lateral shoulder and upper arm

37
Q

Radial nerve

A

C5 C6 C7 C8 T1

38
Q

At the level of the radial head he radial nerve gives off what two branches?

A

superficial and deep branches

39
Q

Superficial branch of the radial nerve

A

follows the brachioradialis to the distal third of the forearm, from where it travels between the brachioradialis and radius to the posterior surface of the hand.

40
Q

Deep branch of the radial nerve

A

penetrates the supinator muscle. it terminates into the posterior interosseous nerve

41
Q

Posterior cutaneous nerve of the arm

A

supplies skin on the posterior side of the upper arm

42
Q

inferior lateral cutaneous nerve of the arm

A

branches off the radial in the middle arm

43
Q

Muscular branches given off the radial nerve in the arm

A

triceps brachii and anconeus

44
Q

Posterior cutaneous nerve of the forearm

A

given off in the upper arm and supplies a narrow area of skin on the lateral side of the posterior forearm

45
Q

Branches of the radial nerve given off at the lateral epicondyle supply what

A

brachioradialis, extensor carpi radialis longus

46
Q

Once in the forearm the radial nerve splits into what two branches

A

deep and superficial

47
Q

The superficial branch travels to the hand and gives off what nerve

A

dorsal digital nerves. supplies everything ulnar doesnt

48
Q

the deep branch of the radial nerve supplies

A

extensor carpi radialis brevis, supinator, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, abductor pollicis longus, extensor pollicis brevis

49
Q

What is the terminal branch of the deep branch of the radial nerve

A

posterior interosseous nerve

50
Q

posterior interosseous nerve supplies

A

extensor pollicis longus, extensor indicis

51
Q

Clinical considerations of the radial nerve

A

wrist drop, triceps and brachioradialis reflexes

52
Q

Erb-Duchenne

A

Supraclavicular traction injury. C5 C6

53
Q

Klumpke

A

Infraclavicular injury like hanging from a limb. C8 T1

Pns (1 decks)

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