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pectoralis major
o. medial half of clavicle, sternum, costal cartilages 1-6
i. lateral lip of intertubercular groove on humerus
a. flexion
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pectoralis minor
o. external surafxes of ribs. 3-5
i. coracoid process of scapula
a. depression and inferior rotation of scapula
-
serratus anterior
o. external surface of ribs 1-8
i. medial border of scapula
a. protraction and superior rotation of scapula
-
latissimus dorsi
o. spinous processes of vertebrae T6- T12, thoracolumbar fascia, iliac crest, inferior three ribs
i. intertubercular groove on humerus
a. extension
-
trapezius
o. posterior surface of ocipital bone, ligamentum nuchae, spinous processes of thoracic vertebrae
i. lateral third of clavicle, acromion process, spine of scapula
- a. superior fiberes: elevate scapula
- middle fibers: retract scapula
- inferior fibers: depresses scapula
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deltoid
o. lateral third of clavicle, acromion process, spine of scapula
i. deltoid tuberosity of humerus
- a. anterior fibers: medial rotation and flexion of aarm
- middle fibers: abduction of arm
- posterior fibers: lateral rotation and extension of arm
-
rhomboid minor
o. ligamentum nuchae, spinous processes of of vertebrae C7 and T1
i. medial border of scapula
a. elevates scapula
-
teres major
o. scapula, near inferior angle
i. medial lip of intertubercular groove
a. extension
-
supraspinatus
o. supraspinous fossa of scapula
i. greater tubercle of humerus
a. abduction of arm
-
infraspinatus
o. infraspinous fossa of scapula
i. greater tubercle of humerus
a. lateral rotation of arm
-
teres minor
o. lateral border of scapula
i. greater tubercle on humerus
a. lateral rotation of arm
-
subscapularis
o. subscapular fossa of scapula
i. lesser tubercle of humerus
a. adduction and medial rotation of arm
-
biceps brachii
- o. long head: superior margin of glenoid fossa of scapula
- short head: coracoid process of scapula
i. radial tuberosity of of radius, fascia of medial forearm via bicipital aponeurosis
a. flexion and supination of forearm
-
brachialis
o. anterior surface of humerus
i. coronoid process of ulna
a. flexion of arm
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