Download Upper Trapezius

Kinesiology I
Muscles of the Shoulder Girdle
MUSCLE
Upper Trapezius
PROXIMAL ATTACHMENT
Occipital bone &
ligamentum nuchae
DISTAL ATTACHMENT
Lateral 1/3 of clavicle
CONCENTRIC ACTION
Scapular elevation &
upward rotation
Middle Trapezius
C7 - T3 spinous processes
Scapular spine
Lower Trapezius
T4 – T12 spinous processes
Scapular spine
Scapular retraction
(adduct)
Scapular depression &
upward rotation
Levator Scapula
C1 - C4 transverse processes
Scapular elevation &
downward rotation
Dorsal Scapular N
Rhomboideus
Major
T2 – T5 spinous processes
Medial border of scapular
btwn superior angle &
scapular spine
Medial border of scapula
from spine to inferior angle
Scapular retraction &
downward rotation
Dorsal Scapular N
Rhomboideus
Minor
C7 & T1 spinous processes
Medial border of scapula
next to spine of the scapular
Scapular retraction &
downward rotation
Dorsal Scapular N
Serratus Anterior
Lateral surface of upper 8 or
9 ribs
Anterior surface of medial
border of scapula
Scapular protraction (abd)
& upward rotation
Long Thoracic N.
Pectoralis Minor
Anterior surface of ribs 3 - 5
Coracoid process of scapula
Medial Pectoral N.
Anterior Deltoid
Lateral 1/3 of clavicle
Deltoid tuberosity of
humerus
Middle Deltoid
Acromion process
Posterior Deltoid
Scapular spine
Deltoid tuberosity of
humerus
Deltoid tuberosity of
humerus
Scapular downward
rotation & depression
Shoulder (GH) flexion,
medial rotation &
horizontal adduction
Shoulder abduction
Axillary N.
Pectoralis Major
Manubrium & body of
sternum, 1st 6
costocartilages, & medial
1/3 of clavicle
T7 – L5 spinous processes,
lumbodorsal fascia, iliac
crest & lower 3 ribs
Inferior angle of scapula
Lateral border of
intertubercular groove of
humerus
Shoulder extension,
lateral rotation, &
horizontal abduction
Shoulder flexion,
adduction, medial
rotation, & horizontal
adduction
Shoulder extension,
adduction, & medial
rotation
Shoulder extension,
adduction, & medial
rotation
Greater tubercle of humerus
Infraspinatus
Supraspinous fossa of
scapula
Infraspinous fossa of scapula
Teres Minor
Latissimus Dorsi
Teres Major
Supraspinatus
Floor of intertubercular
groove of humerus
Medial border of
intertubercular groove of
humerus below lesser tuber.
INNERVATION
Spinal Accessory N. &
C 3,4 spinal nerves
SAME
SAME
Axillary N.
Axillary N.
Medial & Lateral
Pectoral nerves
Thoracodorsal N.
Lower Subscapular N.
Suprascapular N.
Greater tubercle of humerus
Shoulder abduction &
lateral rotation
Shoulder lateral rotation
Lateral border of scapula
Greater tubercle of humerus
Shoulder lateral rotation
Axillary N.
Subscapularis
Subscapular fossa of scapula
Lesser tubercle of humerus
Shoulder medial rotation
Coracobrachialis
Coracoid process of scapula
Medial side of humeral shaft
Biceps (long head)
Supraglenoid tubercle of
scapula
Bicipital aponeurosis &
radial tuberosity
Shoulder flexion &
adduction (assists)
Shoulder flexion (assists)
Upper & Lower
Subscapular nerves
Musculocutaneous N.
Triceps (long head)
Infraglenoid tubercle of
scapula
Olecranon process of ulna
Shoulder extension &
Elbow extension
Suprascapular N.
Musculocutaneous N.
Radial N.