Biceps Brachii

Origin:ShortHead-Coracoid Process of Scapula

          Longhead-Supraglenoid tubercle of Scapula

Insertion:Tuberosity of the Radius and the aponeurosis of the biceps brachii

Action:Flexion of the shoulder;Supinate the forearm;Flexion of the elbow 

Origin:Coracoid process of scapula

Insertion:Medial surface of mid-humeral shaft

Action:Flexion of shoulder;Adduct of the shoulder

Origin:Laterial epicondyle of humerus;Radial collateral ligament

Insertion:Anterior proximal of radial shaft

Action:Supinate the forearm

Origin:Short head-Coracoid process of scapula

          Longhead-Supraglenoid tubercle of scapula

Insertion:Tuberosity of the radius and aponeurosis of biceps brachii

Action:Flex the elbow;Supinate the forearm;Flex the shoulder

Origin:Inferior angle and lower one-third of the lateral border of scapula

Insertion:Crest of the lesser tubercle of the humerus

Action:Extend the shoulder; Adduct the shoulder; Medially rotate the shoulder

Supraspinatus

On page 75 in Trail Guide

Origin: Supraspinous fossa of the scapula

Insertion: Greater Tubercle of the humerus

Action: Laterally rotate the shoulder; Adduct the shoulder; Stabilize the shoulder joint

Origin: Subscapularis fossa of the scapula

Insertion: Lesser tubercle of the humerus

Action: Medially rotate the shoulder; Stabilize the shoulder joint

Origin: Upper two-third of the lateral border of the scapula

Insertion: Greater tubercle of the humerus

Action: Laterally rotate the shoulder; Adduct the shoulder; Stabilize the shoulder joint

Origin: Infraspinous Fossa of the scapula

Insertion: Greater Tubercle of the humerus

Action: Laterally rotate the shoulder; Adduct the shoulder; Stabilize the shoulder joint

Origin: Lateral one-third of clavicle; Acromion and spine of scapula

Insertion: Deltoid tuberosity

Action: Anterior Fiber-flexion of shoulder; Medially rotate shoulder; Horizontal Adduct the shoulder

           Middle fiber-Abduct the shoulder

           Posterior fiber-Extension of shoulder; Laterially rotate shoulder; Horizontal Abduct the shoulder                          

Origin: Sternal Head-Top of manubrium; Clavicular Head-Medial one-third of the clavicle

Insertion: Mastoid process of temporal bone and the lateral portion of superior nuchal line of occiput

Action: Laterally flex the head and neck to same side; Rotate the head and neck to opposite side;  Bilaterally: Flex the neck; Assist to elevate the ribcage during inhalation.

Origin: Medial, Anterior surface of distal ulna

Insertion: Lateral, anterior surface of distal radius

Action: Pronate the forearm

Origin: Common flexor tendon from medial epicondyle of humerus and coccoid process of ulna

Insertion: Middle of lateral surface of radius

Action: Pronate the forearm; Assist to flex the elbow

Origin: Proximal two-thirds of the lateral supracondylar

           ridge of humerus

Insertion: Styloid process of radius

Action: Flex the elbow; Assist to pronate and supinate

           the forearm

Origin: Distal half of anterior surface of humerus

Insertion: Tuberosity and coronoid process of ulna

Action: Flex the elbow

Triceps Brachii

Origin: Longhead-Infraglenoid tubercle of scapula

           LateralHead-Posterior surface of proximal half

           of humerus

           MedialHead-Posterior surface of distal half of

           humerus

Insertion: Olecranon process of ulna

Action:All heads extend the elbow

          LongHead-Adduct the shoulder

Origin: Transverse processes of second through seventh cervical vertebrae(posterior tubercles)

Insertion: First Rib

Action: Unilaterally: laterally flex head and neck to same side; Rotate head and neck to opposite side

Bilaterally: Elevate the ribs during inhalation

Origin: Transverse processes of sixth and seventh cervical vertebrae(posterior tubercles)

Insertion: Second Rib

Action: Unilaterally: laterally flex head and neck to same side; Rotate head and neck to opposite side

Bilaterally: Elevate the ribs during inhalation