Humerus-moves glenohumeral joint

exam 3

Pectoralis major;origin

clavicle, sternum, and costal cartilages of upper ribs

pectoralis major;insertion

greater tubercle of humerus.

pectoralis major; action

flexes, addubts, and medially rotates arm (GH joint).

Latissimus dorsi; action

extends, adducts, and medially rotates arm (GH))

Deltoid;origin

clavicle, acromion process, and spine of scapula

Deltoid; insertion

deltoid tuberosity of humerous1

deltoid; action

abducts, flexes and extends, medially and laterally rotates arm (GH joint)1

supraspinatus;orgin

supraspinous fossa of scapula

supraspinatus; insertion

greater tubercle of humerus@

supraspinatus; action

abducts arm and stabiilzes glenohumeral joint+rotator cuff@

Infraspinatus; origin

infraspinous fossa of scapula

intraspinatus; insertion

greater tubercle of humerus#

infraspinatus: action

laterally rotates arm and stabilizes glenohumeraljoint +rotator cuff #

subscapularis; origin

supscapular fossa of scapula

subscapularis: insertion

lesser tubercle of humerus

subscapularis: action

medially rotates arm and stabilizes glenohumeral joint +rotator cuff

teres minor; origin

axillary border of scapula

teres minor; insertion

greater tubercle of humerus4

teres minor; action

laterally rotates and adducts arm and stabilizes glenohumeral joint+rotator cuff4

teres major;origin

inferior angle of scapula

teres major;insertion

intertubercular groove of humerus

teres major; action

adducts, extends and medially rotates arm (GH joint)%

coracobrachialis; origin

coracoid process of scapula

coracobrachialis; insertion

medial surface of humerus

coracobrachialis; action

flexes and adducts arm (GH joint)`