Triceps Brachii (long head)

O-  infraglenoid tubercle of scapula   

I-  olecranon process of ulna

A- extends elbow

    extends & adducts shoulder

Triceps Brachi (medial head)

O-   lower post. humerus

I-    olecran process of ulna

A-   extends elbow

Triceps Brachi (lateral head)

O-    sup. post./lat. humerus

I-     olecran process of ulna

A-    extends elbow

Biceps Brachii (short head)

O-    coracoid process of scapula

I-     radial tuberosity of radius

A-    flexes elbow;

       supinates forearm

O-    supraglenoid tubercle of scapula

I-     radial tuberosity of radius

A-     flexes elbow; supinates forearm

O-   coracoid process of scapula

I-    center of med. diaphysis of humerus

A-    flexes & adducts shoulder

O-    ant. humerus

I-     ulnar tuberosity & coronoid process of ulna

A-    flexes elbow

Pectoralis Major

O-    clavicle & sternum

I-     greater tubercle of ant. humerus

A-    flexes, adducts, & medially rotates shoulder

O-    ribs 3-5

I-     coracoid process of scapula

A-    depresses & protracts scapula

O-    ribs 1-8

I-     vertebral border of scapula

A-    protracts, depresses, rotates scapula up

O-    inf. angle of scapula

I-    lesser tubercle of ant. humerus

A-   adducts, extends, & medially rotates shoulder

O-    scapular spine, acromion, & clavicle

I-     deltoid tuberosity of humerus

A-    abducts, flexes & extends shoulder

Iliocostalis

Longissimus

Spinalis

O-    manubrium & clavicle

I-     mastoid process of temporal bone

A-    lateral flexion, contralateral rotation