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Tri 3 - Gross Anatomy II > E1C > Flashcards

E1C Flashcards

Arm and Cubital Fossa

1
Q

supraclavicular nerves

A

skin over shoulder and half way down deltoid

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2
Q

upper lateral cutaneous nerve

A

branch of axillary

skin over lower half of deltoid

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3
Q

lower lateral cutaneous nerve

A

skin over lateral arm below deltoid

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4
Q

medial cutaneous nerve

A

branch of medial cord of brachial plexus

skin of base of axilla and medial aspect of arm

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5
Q 
intercostabrachial nerve 
(lateral cutaneous branch of 2nd intercostal nerve)
A

skin of base of axilla and medial aspect of arm

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6
Q

posterior cutaneous nerve

A

branch of radial nerve

skin of back of arm

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7
Q

superficial veins of the arm

A

cephalic vein

basilic vein

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8
Q

cephalic vein origin

A

lateral side of dorsal venous arch of hand

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9
Q

cephalic vein path

A

ascends fascia on lateral aspect
pierces deep fascia
runs superiorly and medially between pectoralis major and deltoid, deep to clavicular part of pectoralis major

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10
Q

cephalic vein termination

A

axillary vein

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11
Q

basilic vein origin

A

medial side of dorsal venous arch of hand

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12
Q

basilic vein path

A

ascends in superficial fascia on medial side

halfway up, pierces deep fascia

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13
Q

basilic vein termination

A

lower border teres major

axillary vein

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14
Q

compartments of the arm

A

anterior & posterior divided by medial and lateral intermuscial septa

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15
Q

muscles of the anterior compartment

innervation: musculocutaneous nerve

A

biceps brachii
coracobrachialis
brachialis

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16
Q

biceps brachii origin

A

SH: coracoid process of scapula
LH: supraglenoid tubercle of scapula, tendon lies in intertubercular groove of humerus

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17
Q

biceps brachii insertion

A

radial tuberosity through deep facia of forearm via bicipital aponeurosis

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18
Q

biceps brachii action

A

flexion, supination of forearm

assist flexion of arm at shoulder

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19
Q

coracobrachialis origin

A

coracoid process of scapula

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20
Q

coracobrachialis insertion

A

middle part of medial surface of humeral shaft

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21
Q

coracobrachialis action

A

flexion and adduction of arm at shoulder

pierced by musculocutaneous nerve

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22
Q

brachialis origin

A

anterior aspect of lower half of humeral shaft

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23
Q

brachialis insertion

A

coronoid process and tuberosity of ulna

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24
Q

brachialis action

A

flexion of forearm at elbow

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25
Q

brachial artery origin

A

lower border teres major

axillary artery

26
Q

brachial artery path

A

medial aspect of arm along with median nerve

deep to bicipital aponeurosis to enter cubital fossa

27
Q

brachial artery termination

A

cubital fossa

divides into radial and ulnar arteries

28
Q

branches of brachial artery

A 
muscular branches (anterior compartment)
profunda brachii artery
superior ulnar collateral artery
inferior ulnar collateral artery
radial and ulnar arteries (terminal branches)
29
Q

profunda brachii artery origin

deep brachial artery, deep artery of arm

A

beginning of brachial artery

30
Q

profunda brachii artery path

A

through triangular interval with radial nerve

to posterior compartment of arm

31
Q

profunda brachii artery termination

A

radial collateral and middle collateral arteries

participates in elbow anastomosis

32
Q

superior ulnar collateral artery

A

accompanies ulnar nerve

participates in elbow anastomosis

33
Q

inferior ulnar collateral artery

A

participates in elbow anastomosis

34
Q

brachial veins

A
  1. accompanying veins (venae comitantes) of brachial artery; paired veins that run along medial and lateral sides of brachial artery
  2. receive tributaries that correspond with branches of brachial artery
  3. have numerous anastomoses with each other and with superficial veins
35
Q

brachial veins origin

A

begin at elbow by union of accompanying veins of radial and ulnar arteries

36
Q

brachial veins termination

A

brachial veins drain into axillary vein or into basilic vein before it becomes axillary vein

37
Q

musculocutaneous nerve

A

terminal branch of lateral cord of brachial plexus

38
Q

musculocutaneous nerve path

A

pierces coracobrachialis
runs inferiorly and laterally between biceps brachii and brachialis
lateral to tendon of biceps brachii pierces deep fascia and becomes superficial
runs down lateral aspect of forearm as lateral cutaneous nerve of forearm (lateral antebrachial cutaneous nerve)

39
Q

musculocutaneous nerve branches

A

muscular branches
cutaneous branch
articular branch to elbow joint

40
Q

muscular branches of musculocutaneous nerve

A

coracobrachialis
biceps brachii
brachialis

41
Q

cutaneous branch of musculocutaneous

A

lateral cutaneous nerve of forearm to root of thumb

42
Q

median nerve origin

A

two roots:
medial cord
lateral cord
gives off NO branches

43
Q

median nerve path

A

runs in arm with brachial artery
it is first lateral to brachial artery
in middle of arm passes anterior to artery, crossing it from lateral to medial
descends medial to artery in lower arm
passes under bicipital aponeurosis to enter cubital fossa

44
Q

ulnar nerve origin

A

terminal branch of medial cord; gives off NO branches

45
Q

ulnar nerve path

A

runs down in anterior compartment of arm, medial to brachial artery, as far as insertion of coracobrachialis (middle of arm)
pierces medial intermuscular septum and descends in posterior compartment in lower arm (anterior to medial head of triceps brachii)
passes posterior to medial epicondyle of humerus (in this location is superficial and vulnerable to injury
referred to in lay terms as “funny bone”)

46
Q

triceps brachii

A

muscle of posterior compartment of arm

47
Q

triceps brachii origin

A

long head: infraglenoid tubercle of scapula
lateral head: posterior surface of humeral shaft above radial (spiral) groove
medial head: posterior surface of humeral shaft below radial (spiral) groove

48
Q

triceps brachii insertion

A

upper surface of olecranon of ulna

49
Q

triceps brachii innervation

A

radial nerve

50
Q

triceps brachii action

A

extension of forearm at elbow

long head assist with extension/adduction of arm at shoulder

51
Q

radial nerve

A

terminal branch of posterior cord

52
Q

radial nerve path

A

through triangular interval (with profunda brachii vessels) to posterior compartment of arm
runs inferiorly and laterally in radial (spiral) groove (area where can be damaged by fracture of humeral shaft)
in lower arm pierces lateral intermuscular septum and enters anterior compartment
runs inferiorly between brachialis (medial to nerve) and brachioradialis (lateral to nerve)

53
Q

radial nerve termination

A

anterior to lateral epicondyle of humerus divides into superficial and deep branches (terminal branches)

54
Q

radial nerve branches

A 
muscular branches
lower (inferior) lateral cutaneous 
posterior brachial cutaneous 
posterior antebrachial cutaneous 
elbow articular branch 
deep and superficial branches (terminal)
55
Q

cubital fossa

A

triangular depression anterior to elbow joint

56
Q

cubital fossa boundaries

A

medial: pronator teres
lateral: brachioradialis
superiorly: line connecting medial/lateral epicondyles of humerus

57
Q

radial nerve muscular branches

A

triceps
anconeus
brachioradialis
extensor carpi radialis longus

58
Q

cubital fossa floor

A

brachialis

supinator

59
Q

cubital fossa roof

A

deep fascia of forearm

reinforced by bicipital aponeurosis

60
Q

cubital fossa roof contents

A

medial cubital vein (superficial, connects cephalic and basilic)
medial and lateral cutaneous nerves

61
Q

cubital fossa contents

A 
median nerve
brachial artery (w/ulnar and radial) and veins
tendon of biceps brachii
radial nerve (superficial and deep branches)

Tri 3 - Gross Anatomy II (20 decks)

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