Upper limb

Question 1

What is this?

what triangle is it a part of?

Answer 1

trapezius muscle

part of the posterior triangle

Question 2

What is this nerve?

what is its clinical importance?

What does it innervate?

Answer 2

spinal accessory nerve (CN XI)

general visceral efferent

clinical importance:

lies relatively superficial and lateral to
the sternocleidomastoid muscle it is prone to injury by blows to the neck,
falls or radical neck dissection

innervates: trapezoid and sternocleidomastoid

Question 3

Answer 3

Latissimus Dorsi Muscle

origin: inferior angle of scapula, all the way down to iliac crest, and goes to crest of lessser tubersotiy of the humerus

Question 4

Answer 4

Levator Scapulae Muscle

goes from medial boarder of scalpula to about c1

Question 5

Answer 5

Rhomboid major Muscle

medial part of calcuplua to T2-t5

Question 6

Answer 6

Deltoid Muscle

about the medial part of the humerous to 1/3 of the clavicle and spne of the scapula

Question 7

Answer 7

Supraspinatus Muscle

greater tubercle of the humerus , supraspinaous fossa of salpula *sits in the scapula almost

action: abduction of the arm

nerve supply: suprascupalr nerve

blood supply: suprasacuplar artery

Question 8

Answer 8

Infraspinatus Muscle

goes to greater tubercle of the humerus to the medial line of the scapula, there teres muscles are coming from the inferior border of the scapula

nerve and blood supply: suprascrapular

Question 9

Answer 9

teres minor

proximal to the teres major, attaches to the lateral part of the scapula, goes to the greater tubercle of the humerus

nerve: axillary nerve

arterial supply: circumflex scapula artery

Question 10

Answer 10

teres major muscle

lesser tubercle of the humerus, to the inferior lateral part of scapula

nerve: lower subscapular nerve and posterior cord of brachial plexus

arterial supply: circumflex scapular artery

Question 11

Answer 11

Triceps Brachii Muscle

Question 12

Answer 12

triceps brachii long head: insets on the sacpula

triceps brachii lateral head: attaches to the humerus

triceps

tracieps brachii tendon would inset into the elbow

nerve: radial nerve

arterial supply

deep brachial artery

Question 13

Answer 13

Axillary Nerve

perceives the deltoid muscle, comes out between the infraspinatus and the teres minor almost

branch of the posterior cord of the brachial plexus

detloid, teres minor, and skin of upper lateral arm

Question 14

what is this artery running with the axillary nerve?

Answer 14

posterior circumflex humeral artery

supplies: deltoid arm muscles near the neck of the humerus

**anastamoses with the anterior cricumflex humeral artery

Question 15

What is thisnerve? What does it pass

Answer 15

Suprascapular nerve

passes UNDERNEATH the Superior transverse scapular ligament (navy under bridge)

supplies supraspinatus, infraspinatus

Question 16

What is this artery in the posterior triangle of the neck (made by sternomasticoid, trapezius, and clavicle?)

Answer 16

Suprascapular artery

passes ABOVE the superior transverse scapular ligament “army over the bridge, navy under the bridge”

supplies the supraspinatus, infraspinatus muscles

Question 17

What is this?

When is it commonly injured?

Answer 17

radial nerve between long and lateral head of triceps brachi

could be injured with a humerous fracture results in WRIST DROP

in the THE TRIANGULAR INTERVAL

• Borders:
o superiorly - teres major muscle,
o medially - triceps muscle (the long head),
o laterally - humerus

Question 18

Answer 18

deep brachial artery

*next to the radius in the triangular interval

supplies the posterior arm

Question 19

what is this?

what sx of a tear?

Answer 19

The glenoid labrum (glenoid ligament) is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the shoulder blade.

Most labral tears are the result of an injury to the shoulder. A tear in the labrum can
cause pain and a catching sensation of the shoulder.

Question 20

what is the blue?

Answer 20

The Coracoacromial Ligament is a strong triangular band, extending between the coracoid process and the acromion.

Question 21

Answer 21

Acromioclavicular Ligament

Question 22

Answer 22

Coracoclavicular Ligaments

connects the coratoid process with the clavicle

attaches the clavicle with the coracoid
process of the scapula. This ligament has two parts:
oconoid (medial) ligament
otrapezoid (lateral) ligament

Question 23

only ligament attached to base of thumb

Answer 23

abductor pollicis longus

radius to the to the 1st metacarpal (base)

ESTENSOR and ABDUCTION of the thumb

innervated by the RADIAL NERVE

Question 24

Answer 24

Extensor Pollicis Brevis

• *starts on radius and more medial than the extensor pollicis longus*
• * brevis is BETWEEN 2 LONGUS*
• closer to wrist than abbudctor longus*

inserts on the THUMB

INVOLVED IN EXTENSION OF THE THUMB

innvervated by radial nerve

Question 25

Answer 25

Extensor Pollicis Longus Muscle to base of the thumb origin is the ulna (on the posterior surface when palms up) Posterior interosseous nerve of radius

Answer 26

extensor capri radius longus extension and abduciton if the wristm weak flexion of the elbow radial nerve

Question 27

attaches to Middle finger (being brief with someone)

Answer 27

Extensor Carpi Radialis Brevis more medial than the extensor carpi radiliaus longus, goes from humerous to middle finger on the posterior side of the hand Posterior interosseous nerve

Question 28

Answer 28

Extensor Digitorum Muscle attaches to four digits of hand from lateral humerous involves in EXTENSION OF THE WRIST Posterior interosseous nerve

Question 29

Answer 29

Extensor Carpi Ulnaris more medial than the extensor digitorum Posterior interosseous nerve artery: ulnar artery

Question 30

INSERTS ON LATERAL HUMERUS

Answer 30

Brachioradialis (PALMS UP SIDE!!) lateral, from humerous to lateral radius on the posterior side action: flexing the elbow, supination and pronation of the forearm nerve: radial nerve arterial supply: radial recurrent artery

Question 31

Answer 31

pronator teres goes from humerus to RADIUS but cross UNDER THE BRACHIORADIUS action: weak flexion of the elow joint, pronator of the forearm median nerve artery: ulnar artery and the anterior ulnar trecurrent artery

Question 32

Answer 32

suponator muscle humerus to radius (ON SAME SIDE AS THUMB) supinatoion of the forearm nerve: posterior itnerossei nerve artery: recurrent interosseous artery

Question 33

Answer 33

superificial radial nerve travels along the radius about the wrist pops up to top of hand and supplies first three fingers

Question 34

Answer 34

median nerve nerve on thumbs side when palms up carpal tunnel syndrome (sine it passes through the carpal tunnel) provides the flexor muscles of the forearms and the skin of the radial half of the palm and lateral digits

Question 35

large artery that is on the "up" side of the forearm

Answer 35

brachial artery terminates at the level of the elbow (where it divides into radial and ulnar) branches into deep brachial;, superior ulnar colaltera, infeiror ulnar collateral, radial, and ulnar arteries

Question 36

Answer 36

radial artery supplies: posterior eblow, forearm, and hand also the palmar side of the hand and thumb e radial artery ends by anastomosing with the deep branch of the ulnar artery to form: the deep palmar arch

Question 37

Answer 37

Ulnar Artery \*branch of bracial artery supplies medial side of the anterior forearm, posterior forearm, superficial palm and fingers

Question 38

lateral to the superifical flexor digitorum

Answer 38

Flexor Carpi Radialis . between second and third fingers

Question 39

posterior side

Answer 39

Flexor Carpi Ulnaris posteritor side of ulnus to the pinky finger base on PALMS UP SIDE

Question 40

palms up side

Answer 40

flexor digitorium superficialis has 2 heads.. one on humerus and one on radius goes to all fingers on thumbs up side except the thumb flexion of wrist, and f2-5th digits nerve supply: median nerve arterial supply: ulnar nerve

Question 41

Answer 41

Flexor Digitorum Profundus **bewlow the flexor digioturm superficialis** nerve: median and ulnar nerve action: flexion of the wrist and fingers atery: ulnar and anterior interosseous artery

Question 42

same level as the flexor digitorum profundus

Answer 42

Flexor Pollicis Longus goes to the palmer side of the thumb actionL: adbuction of wrist, flexion of the joints of the thumb nerve; median nerve arterial: anterior interosseous artery

Question 43

Answer 43

Pronator Quadratus band that stretches from the ulna to the radius at above the wrist

Question 44

what is this? what fracture could damage this?

Answer 44

ulnar nerve in the hand Medial epicondyle fracture could damage this

Question 45

Answer 45

radial collateral ligament

Question 46

Answer 46

Ulnar Collateral Ligament The ulnar collateral ligament is often torn, and an associated fracture of the head of the radius, coronoid process or olecranon process of the ulna may occur.

Question 47

Answer 47

brachialis

Question 48

Answer 48

long head of biceps brachi

Question 49

Answer 49

suPinator goes from pinky side on dorsum to palmar side

Question 50

Answer 50

pronator quadratus

Question 51

Answer 51

short head of biceps brachi musculocutaneous nerve and the brahcial plexus c5-c6

Question 52

Answer 52

triceps brachi radial nerve

Question 53

Answer 53

extensor carpi radilasi

Question 54

Answer 54

brachioradilis