E1C

Question 1

supraclavicular nerves

Answer 1

skin over shoulder and half way down deltoid

Question 2

upper lateral cutaneous nerve

Answer 2

branch of axillary

skin over lower half of deltoid

Question 3

lower lateral cutaneous nerve

Answer 3

skin over lateral arm below deltoid

Question 4

medial cutaneous nerve

Answer 4

branch of medial cord of brachial plexus

skin of base of axilla and medial aspect of arm

Question 5

intercostabrachial nerve 
(lateral cutaneous branch of 2nd intercostal nerve)

Answer 5

skin of base of axilla and medial aspect of arm

Question 6

posterior cutaneous nerve

Answer 6

branch of radial nerve

skin of back of arm

Question 7

superficial veins of the arm

Answer 7

cephalic vein

basilic vein

Question 8

cephalic vein origin

Answer 8

lateral side of dorsal venous arch of hand

Question 9

cephalic vein path

Answer 9

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

Question 10

cephalic vein termination

Answer 10

axillary vein

Question 11

basilic vein origin

Answer 11

medial side of dorsal venous arch of hand

Question 12

basilic vein path

Answer 12

ascends in superficial fascia on medial side

halfway up, pierces deep fascia

Question 13

basilic vein termination

Answer 13

lower border teres major

axillary vein

Question 14

compartments of the arm

Answer 14

anterior & posterior divided by medial and lateral intermuscial septa

Question 15

muscles of the anterior compartment

innervation: musculocutaneous nerve

Answer 15

biceps brachii
coracobrachialis
brachialis

Question 16

biceps brachii origin

Answer 16

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

Question 17

biceps brachii insertion

Answer 17

radial tuberosity through deep facia of forearm via bicipital aponeurosis

Question 18

biceps brachii action

Answer 18

flexion, supination of forearm

assist flexion of arm at shoulder

Question 19

coracobrachialis origin

Answer 19

coracoid process of scapula

Question 20

coracobrachialis insertion

Answer 20

middle part of medial surface of humeral shaft

Question 21

coracobrachialis action

Answer 21

flexion and adduction of arm at shoulder

pierced by musculocutaneous nerve

Question 22

brachialis origin

Answer 22

anterior aspect of lower half of humeral shaft

Question 23

brachialis insertion

Answer 23

coronoid process and tuberosity of ulna

Question 24

brachialis action

Answer 24

flexion of forearm at elbow

Question 25

brachial artery origin

Answer 25

lower border teres major | axillary artery

Question 26

brachial artery path

Answer 26

medial aspect of arm along with median nerve | deep to bicipital aponeurosis to enter cubital fossa

Question 27

brachial artery termination

Answer 27

cubital fossa | divides into radial and ulnar arteries

Question 28

branches of brachial artery

Answer 28

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

Question 29

profunda brachii artery origin | deep brachial artery, deep artery of arm

Answer 29

beginning of brachial artery

Question 30

profunda brachii artery path

Answer 30

through triangular interval with radial nerve | to posterior compartment of arm

Question 31

profunda brachii artery termination

Answer 31

radial collateral and middle collateral arteries | participates in elbow anastomosis

Question 32

superior ulnar collateral artery

Answer 32

accompanies ulnar nerve | participates in elbow anastomosis

Question 33

inferior ulnar collateral artery

Answer 33

participates in elbow anastomosis

Question 34

brachial veins

Answer 34

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

Question 35

brachial veins origin

Answer 35

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

Question 36

brachial veins termination

Answer 36

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

Question 37

musculocutaneous nerve

Answer 37

terminal branch of lateral cord of brachial plexus

Question 38

musculocutaneous nerve path

Answer 38

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)

Question 39

musculocutaneous nerve branches

Answer 39

muscular branches cutaneous branch articular branch to elbow joint

Question 40

muscular branches of musculocutaneous nerve

Answer 40

coracobrachialis biceps brachii brachialis

Question 41

cutaneous branch of musculocutaneous

Answer 41

lateral cutaneous nerve of forearm to root of thumb

Question 42

median nerve origin

Answer 42

two roots: medial cord lateral cord gives off NO branches

Question 43

median nerve path

Answer 43

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

Question 44

ulnar nerve origin

Answer 44

terminal branch of medial cord; gives off NO branches

Question 45

ulnar nerve path

Answer 45

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”)

Question 46

triceps brachii

Answer 46

muscle of posterior compartment of arm

Question 47

triceps brachii origin

Answer 47

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

Question 48

triceps brachii insertion

Answer 48

upper surface of olecranon of ulna

Question 49

triceps brachii innervation

Answer 49

radial nerve

Question 50

triceps brachii action

Answer 50

extension of forearm at elbow | long head assist with extension/adduction of arm at shoulder

Question 51

radial nerve

Answer 51

terminal branch of posterior cord

Question 52

radial nerve path

Answer 52

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)

Question 53

radial nerve termination

Answer 53

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

Question 54

radial nerve branches

Answer 54

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

Question 55

cubital fossa

Answer 55

triangular depression anterior to elbow joint

Question 56

cubital fossa boundaries

Answer 56

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

Question 57

radial nerve muscular branches

Answer 57

triceps anconeus brachioradialis extensor carpi radialis longus

Question 58

cubital fossa floor

Answer 58

brachialis | supinator

Question 59

cubital fossa roof

Answer 59

deep fascia of forearm | reinforced by bicipital aponeurosis

Question 60

cubital fossa roof contents

Answer 60

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

Question 61

cubital fossa contents

Answer 61

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