Veins, Arteries, Nerves: Test 2

Question 0

Course of suprascapular artery

Answer 0

Inferolaterally: anterior scalene, phrenic n, subclavian a, brachial plexus (lateral and parallel to clavicle)

Laterally: supraspinous fossa to scapular spine to infraspinous fossa

Question 1

Suprascapular Artery Origin

Answer 1

Thyrocervical

Question 2

Origin of posterior circumflex humeral artery

Answer 2

Third part of axillary artery

Question 3

Course of posterior circumflex humeral artery

Answer 3

Encircles surgical neck of humerus
Anastomoses with anterior branch
Traverses quadrangular space

Question 4

Origin of suprascapular nerve

Answer 4

Superior trunk

C5,C6, often C4

Question 5

Course of suprascapular nerve

Answer 5

Passes across posterior cervical triangle above brachial plexus
Through scapular notch deep to transverse scapular ligament

Question 6

Innervation of suprascapular nerve

Answer 6

Supraspinatus
Infraspinatus
Glenohumeral joint

Question 7

Origin of axillary nerve

Answer 7

Terminal branch of posterior cord

Receives fibers from C5, C6

Question 8

Course of axillary nerve

Answer 8

Posteriorly exits axillary fossa and passes through quadrangular space with posterior circumflex humeral artery

Gives rise to superior lateral brachial cutaneous nerve
Winds around surgical neck of humerus deep to deltoid

Question 9

Innervation of axillary nerve

Answer 9

Glenohumeral joint
Teres minor
Deltoid
Skin over inferior deltoid

Question 10

Course of cephalic vein

Answer 10

Lateral dorsal network down lateral arm/forearm to lateral wrist

Passes over deltoid, pec major, clavipectoral triangle, costocoracid membrane, terminal part of axillary vein

Question 11

Course of basilic vein

Answer 11

Medial end of dorsal veinous network along medial side of forearm

Parallel with brachial artery

Question 12

Branches of the axillary artery

Answer 12

Superior thoracic
Thoraco-acromial
Lateral thoracic
Circumflex humeral (anterior and posterior)
Subscapular

Question 13

Course of superior thoracic artery

Answer 13

Pec minor, pec major, thoracic wall, first/second intercostal space, serratus anterior

Question 14

Course of thoraco-acromial artery

Answer 14

Curls around superior medial border of pec minor, pierces costocoracid membrane

Divides into 4 branches: pectoral, deltoid, acromial, clavicular

Question 15

Course of lateral thoracic artery

Answer 15

Axillary border of pec minor, thoracic wall, lateral breast

Question 16

Course of subscapular artery

Answer 16

Inferior border of subscapularis, lateral scapula, divides into circumflex scapular and thoracodorsal arteries

Question 17

Branches of the brachial artery

Answer 17

Profunda brachii artery
Superior ulna collateral
Inferior ulna collateral

Question 18

Course of profunda brachii artery

Answer 18

Accompanies radial nerve along radial groove of humerus
Supplies posterior arm
Anastomoses around elbow

Question 19

Course of superior ulna collateral

Answer 19

Accompanies ulnar nerve to posterior elbow

Anastomoses with posterior ulnar recurrent artery

Question 20

Course of inferior ulnar collateral

Answer 20

Passes anterior to medial epicondyle of humerus to anastomoses with anterior ulnar recurrent artery

Question 21

Branches of subclavian artery

Answer 21

Internal thoracic

Thyrocervical trunk

Question 22

Course of internal thoracic artery

Answer 22

Sternal end of clavicle, 1st costal cartilage, thorax

Gives rise to perforating branches (anterior intercostal, musculophrenic, superior epigastric)

Question 23

Course of thyrocervical trunk artery

Answer 23

Ascends as short trunk giving rise to inferior thyroid artery and cervicodorsal trunk

Suprascapular and dorsal scapular arteries arise from cervicodorsal trunk

Question 24

Origin/termination of brachial artery

Answer 24

Continuation of axillary artery Begins at inferior teres major Ends at cubital fossa

Question 25

What two arteries does the brachial artery give rise to?

Answer 25

Radial and ulnar arteries

Question 26

What nerve does the brachial artery accompany?

Answer 26

Median nerve

Question 27

Where is the brachial artery palpable?

Answer 27

Median bicipital groove

Question 28

Where does the ulnar artery begin and end?

Answer 28

Begins as branch of brachial artery in cubital fossa Ends in hand

Question 29

Where is the ulnar artery palpable?

Answer 29

Lateral side of flexor carpi ulnaris (FCU) tendon

Question 30

Course of ulnar artery

Answer 30

Anterior/medial forearm: Under pronator teres, palmaris longus, flexor digitorum Passes flexor retinaculum at wrist in ulnar (Guyon) canal Enters hand

Question 31

Where does the radial artery begin and end?

Answer 31

Begins as branch of brachial artery in cubital fossa Ends by passing through floor of anatomical snuff box to enter hand

Question 32

Where is radial artery palpable?

Answer 32

Distal radius between tendons of FCR and APL

Question 33

Course of radial artery

Answer 33

Lateral: | Under brachioradialis, winds around radius, crosses floor of snuff box, pierces 1st dorsal interosseous muscle in hand

Question 34

Origin of median nerve

Answer 34

Union of lateral root of media nerve with medial root of medial cord C6-C8

Question 35

Course of median nerve

Answer 35

Runs medial to brachial artery and enters cubital fossa Descends to pass pronator teres, flexor dig. superficialis/profundus Traverses carpal tunnel

Question 36

What does the median nerve innervate?

Answer 36

Thumb, index, and middle fingers | Anterior lateral half of palm

Question 37

Origin of ulnar nerve

Answer 37

Larger terminal branch of medial cord of brachial plexus | C8 and T1

Question 38

Course of ulnar nerve

Answer 38

Passes between heads of FCU to enter forearm Passes posterior to medial epicondyle Descends between FCU and FDP

Question 39

What does the ulnar nerve innervate?

Answer 39

Pinky and third finger | Medial half of hand (anterior and posterior)

Question 40

Origin of radial nerve

Answer 40

Larger terminal branch of posterior cord of brachial plexus C5-T1

Question 41

Course of radial nerve

Answer 41

Enters cubital fossa between brachioradialis and brachialis Passes anterior lateral epicondyle Divides into terminal superficial and deep branches

Question 42

What does the radial nerve innervate?

Answer 42

Snuff box | Posterior lateral half of hand