Upper Extremity Muscles

Front 1

trapezius - attachments

Back 1

proximal - superior nuchal line, external occipital protruberance, medial margin of the ligamentum nuchae , spinous processes of C VII to T XII and the relates supraspinous ligaments
distal - superior edge of the crest of of the spine of the scapula , acromion, posterior border of lateral one -third of clavicle

Hint 1

accesory nerve

powerful elevator of the scapula, rotates the scapula during abduction of humerus above horizontal
middle fibers retract scapula
lower fibers depress scapula

Front 2

deltoid - Att.

Back 2

proximal - inferior edge of the crest of the spine of scapula , lateral margin of acromion, anterior border of lateral 1/3 of clavicle
distal - deltoid tuberosity of humerus

Hint 2

N - axilary nerve (C5, C60

major abductor of arm ( abducts arm beyond 15 degree done by supraspinatus)
clavicular fibers assist in flexing the arm,
posterior fibers assist in extending the arm

Front 3

levator scapulea - att

Back 3

transverse processes of C I and C II and posterior tubercles of transverse process of CIII and CIV
distal - posterior surface of medial border of scapula from superior angle to root of spine of scapula

Hint 3

dorsal scapular nerve and branches directly from ant. rami of C3 and C4

Front 4

rhomboid minor - att

Back 4

proximal - lower end of ligamentum nuchae and spinus processes of C VII and TI
distal - posterior surface of medial border of scapula at the root of the spine of scapula

Hint 4

dorsal scpular nerve (C4, C5)

elevates and retracts the scapula

Front 5

rhomboid major - ATT

Back 5

proximal - spinus processes of T II - T V and intervening supraspinous ligaments
distal - posterior surface of medial border of scapula from the root of spine to the inferior angle

Hint 5

dorsal scapular nerve ( C4, C5)

elevates and retracts the scapula

Front 6

trapezius - N and F

Back 6

accesory nerve

powerful elevator of the scapula, rotates the scapula during abduction of humerus above horizontal
middle fibers retract scapula
lower fibers depress scapula

Front 7

deltoid - N and F

Back 7

N - axilary nerve (C5, C60

major abductor of arm ( abducts arm beyond 15 degree done by supraspinatus)
clavicular fibers assist in flexing the arm,
posterior fibers assist in extending the arm

Front 8

levator scapulae - N and F

Back 8

dorsal scapular nerve and branches directly from ant. rami of C3 and C4

elevates the scapula

Front 9

rhomboid minor - N and F

Back 9

dorsal scapular nerve ( C4, C5)

elevates and retracts the scapula

Front 10

rhomboid major - N and F

Back 10

dorsal scapular nerve ( C4, C5)

elevates and retracts the scapula

Front 11

pectoralis major - ATT

Back 11

proximal - clavicular head - ant. surface of medial half of clavicle , sternocostal head ant surface of sternum, first seven costal cartilages, sternal end of sixth rib aponeurosis of external oblique
distal - lateral lip of intertubercular sulcus of humerus

Front 12

pectoralis major - N and F

Back 12

medial and lateral pectoral nerve, ( C5 - T1 )

flexion, adduction and medial rotation of arm at glenohumeral joint

Front 13

subclavius - ATT

Back 13

p - first rib
d- groove on inferior surface of middle 1/3 of clavicle

Front 14

subclavius - N and F

Back 14

nerve to subclavius ( C5, C6)

pulls tip of shoulder down and pulls clavicle medially to stabilize starnoclavicular joint

Front 15

pectoralis minor - ATT

Back 15

p- ribs III - V
d- coracoid process of scapula

Front 16

pectorais minor - N and F

Back 16

medial pectoral nerve ( C5 - T1)

Front 17

serratus anterior - ATT

Back 17

p- lateral surfaces of upper 8-9 ribs and deep fascia
d- costal surface of medial border of scapula

Front 18

serratus anterior - N and F

Back 18

long thoracic nerve ( C5 - C7)

protraction and rotation of the scapula , keeps medial border and inferior angle of scapula opposed to thoracic wall

Front 19

biceps brachii - ATT

Back 19

p- long head - supraglenoid tubercle of scapula,
short head - coracoid process
d- tuberosity of radius

Front 20

biceps brachii - N and F

Back 20

musculocutaneus (C5, C6)

flexor of the forearm at the elbow joint, and supinator of the forearm
accessory flexor of teh arm and the glenohumeral joint

Front 21

coracobrachialis - ATT

Back 21

p - coracoid process
d- linear roughening of medial side of midshaft of humerus

Front 22

coracobrachialis - N and F

Back 22

musculocutaneous ( C5, C6, C7)


flexor of the arm at glenohumeral joint , adducts arm

Front 23

what are teh 4 muscles of rotator cuff?

Back 23

SITS
supraspinatous,
infraspinatus,
teres minor,
subscapularis

Front 24

define borders of quadrangular space

Back 24

superior - inferior border of teres minor
lateral - surgical neck of the humerus
medial - lateral border of the long head of triceps brachii
inferior - superior border of the teres major

Front 25

what can u find in quadrangular space?

Back 25

axilary nerve and posterior circumflex humeral artery and vein

Front 26

define borders of triangular space

Back 26

lateral - long head of triceps brachii
superior - inferior margin of teres minor
inferior - superior of teres major

Front 27

what pass through triangular space?

Back 27

circumflex scapular artery and vein

Front 28

define borders of triangular interval

Back 28

medially - lateral margin of the long head of triceps brachii
laterally - shaft of the humerus
superior - inferior margin of the teres major

Front 29

which nerve is damaged when patient presents with claw hand?

Back 29

ulnar nerve

Front 30

which nerve is damaged when patient presents with ape hand?

Back 30

median nerve

Front 31

which nerve is damaged when patient presents with wrist drop ?

Back 31

radial nerve

Front 32

which nerve is damaged when patient presents with bishop's hand ( or hand of benediction)?

Back 32

median nerve

Front 33

which nerve is damaged when patient presents with scapular winging?

Back 33

long thoracic nerve

Front 34

which nerve is damaged when patient presents with unable to wipe bottm?

Back 34

thoracodorsal nerve

Front 35

which nerve is damaged when patient presents with loss of forearm pronation?

Back 35

median nerve

Front 36

which nerve is damaged when patient presents with cannot ab- or addduct fingers?

Back 36

ulnar nerve

Front 37

which nerve is damaged when patient presents with loss of arm abduction?

Back 37

axilary nerve

Front 38

which nerve is damaged when patient presents with weak lateral rotation of arm?

Back 38

suprascapular nerve and /or axilary nerve

Front 39

list muscles responsible for scapular depression

Back 39

subclavius
pectoralis minor
lower part of trapezius

Front 40

list muscles responsible for scapular elevation

Back 40

upper trapezius
levator scapulae
thomboids (major and minor)

Front 41

list muscles responsible for scapular adduction

Back 41

rhomboids

Front 42

list muscles responsible for scapular abduction

Back 42

serratus anterior
pectoralis minor

Front 43

list muscles responsible for glenohumeral abduction 0- 90

Back 43

supraspinatus and
middle deltoid

they are both agonists - not only supraspinatus

Front 44

list muscles responsible for glenohumeral abduction 90 - 150

Back 44

plus
inferior part of trapezius
serratus anterior (lower portion)

Front 45

list muscles responsible for glenohumeral abduction 150- 180

Back 45

plus
contralateral paraspinal

Front 46

list muscles responsible for glenohumeral flexion 0 -60

Back 46

coracobrachialis and
long head of biceps

Front 47

list muscles responsible for glenohumeral flexion 60 -120

Back 47

plus
lower part of serratus anterior and
inf. part of trapezius

Front 48

list muscles responsible for glenohumeral flexion 120 - 180

Back 48

contralateral spinal muscle

Front 49

list muscles responsible for glenohumeral extension

Back 49

teres minor
teres major
post. deltoid
latissimus dorsi

Front 50

list muscles responsible for scapulothoracic motion

Back 50

rhomboids
midle trapezius

Front 51

list muscles responsible for glenohumeral adduction

Back 51

pectoralis major
latissimus dorsi
teres major
rhomboids
triceps brachii long head

Front 52

list muscles responsible for glenohumeral medial rotation

Back 52

latissimus dorsi
teres major
subscapularis
pectoralis major

Front 53

list muscles responsible for glenohumeral lateral rotation

Back 53

teres minor
infraspinatus

Front 54

which vector is largest for brachialis with shoulder flexion?

Back 54

spurt

Front 55

which vector is largest for biceps brachii during flexion?

Back 55

spin

Front 56

which vector is largest for brachioradialis for brachioradialis during flexion?

Back 56

shunt