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Undeleted > Axilla & Brachial Plexus > Flashcards

Axilla & Brachial Plexus Flashcards

1
Q

order of hierarchy of brachial plexus? where does each emerge? how many of each?

A

“Read The Damn Cadaver Book” Rami- upper neck Trunks- lower neck Divisions- behind clavicle Cords- in axilla Branches- upper arm 5 on ends (5 roots, 5 branches) 3-6-3 in between (3 trunks, 6 divisions, 3 cords)

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1
Q

formed from posterior cord, circles behind humerus in the quadrangular space

A

axillary nerve

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1
Q

innervates subclavius muscle

A

nerve to subclavius

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2
Q

brachialis is innervated 1/2 by ___ & 1/2 by ___

A

musculocutaneous

radial

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3
Q

anterior wall of axilla

A

pec major & minor

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3
Q

the brachial plexus is composed of ventral rami of…

A

C5-T1

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4
Q

innervates subscapularis & teres major

A

lower subscapular nerve

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5
Q

what does ulnar nerve innervate?

A

most of hand muscles

flexor carpi ulnaris

1/2 flexor digitorum profundus

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5
Q

innervates rhomboids & levator scapulae

A

dorsal scapular nerve

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7
Q

lateral wall of axilla

A

bicipital groove of humerus

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8
Q

what is formed by the lateral cord?

A

musculocutaneous nerve

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8
Q

“major nerve” of the anterior arm

A

musculocutaneous nerve

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8
Q

what does radial nerve innervate?

A

muscles of posterior arm & forearm and 1/2 brachialis

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9
Q

Identify.

A

Ulnar nerve

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10
Q

posterior wall of axilla

A

latissimus dorsi, teres major, subscapularis

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10
Q

5 groups of lymphatics in axilla

A

pectoral, subscapular, humeral, central, apical

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11
Q

pyramidal shaped region between arm & chest

A

axilla

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11
Q

innervates supraspinatus & infraspinatus

A

suprascapular nerve

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13
Q

base of axilla

A

skin/fascia of armpit

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14
Q

provides sensory innervation to medial arm

A

medial brachial cutaneous n

15
Q

what does axillary nerve innervate?

A

deltoid & teres minor

16
Q

innervates latissimus dorsi

A

thoracodorsal nerve

17
Q

innervates subscapularis muscle

A

upper & lower subscapular nerves

18
Q

these nodes drain the posterior thoracic wall & scapular region

A

subscapular

19
Q

provides sensory innervation to medial forearm

A

medial antebrachial cutaneous n

20
Q

sensory innervation to lateral arm? pad of thumb? index finger? little finger?

A

C5 C6 C7 C8

20
Q

which cranial nerves emerge above their respective vertebrae?

A

C1-C7

20
Q

innervates both pectoralis minor & major

A

medial pectoral nerve

21
Q

Identify 1-2.

A
  1. Coracobrachialis
  2. Musculocutaneous nerve
22
Q

Identify.

A

Radial nerve

23
Q

where does C8 spinal nerve emerge?

A

below C7 vertebra

24
Q

innervates pectoralis major (only)

A

lateral pectoral nerve

26
Q

these nodes drain the upper limb except for the portion along the cephalic vein

A

humeral

27
Q

Identify.

A

Axillary nerve

29
Q

these nodes drain all other nodes in the axilla

A

apical

30
Q

innervates serratus anterior

A

long thoracic nerve

32
Q

this nerve is formed by 1/2 of lateral cord and 1/2 of medial cord

A

medial nerve

34
Q

“major nerve” of anterior forearm

A

median nerve

36
Q

medial wall of axilla

A

serratus anterior

38
Q

these nodes drain the anterior thoracic wall & most of breast

A

pectoral

40
Q

what does musculocutaneous innervate?

A

coracobrachialis, biceps brachii, 1/2 brachialis

42
Q

these nodes drain from pectoral, subscapular, humeral nodes to the apical nodes

A

central

43
Q

Identify.

A

radial nerve

44
Q

what nerve innervates most of anterior forearm?

A

median nerve

45
Q

Identify.

A

Median nerve

46
Q

this nerve is formed from the medial cord, runs behind the medial epicondyle

A

ulnar nerve

47
Q

“major nerve” of the hand

A

ulnar nerve

48
Q

formed from posterior cord, passes in radial groove & is in triangular interval

A

radial nerve

49
Q

what muscle does musculocutaneous pass through?

A

coracobrachialis

Undeleted (13 decks)

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