muscles - arm movement at shoulder joint

supraspinatus origin

supraspinous fossa of sacpula

supraspinatus insertion

greater tubercle of humerus

supraspinatus innervation

suprascapular nerve

supraspinatus actions

abduction and shoulder

infraspinatus origin

infraspinous fossa at scapula

infraspinatus insertion

greater tubercle of humerus

infraspinatus innservation

suprascapular nerve

infraspinatus actions

lateral rotation of shoulder

subscapularis origin

subscapular fossa

subscapularis insertion

lesser tubercle of humerus

subscapularis innervation

upper and lower subscapular nerves

subscapularis actions

medially rotate at shoulder

teres minor origin

lateral border of scapula

teres minor insertion

greater tubercle of humerus

teres minor innervation

axillary nerve

teres minor action

laterally rotates and adducts at shoulder

teres major origin

inferior angle of scapula

teres major insertion

intertubercular sulcus of humerus

teres major innervation

lower subscapular nerve

teres major action

extension and medial rotation and shoulder

deltoid origin

anterior clavicle, acromion, spine of scapula

deltoid insertion

deltoid tuberosity of humerus

deltoid innervation

axillary nerve

deltoid action

whole muscle abduction at shoulder

pectoralis major origin

sternal half of clavicle, sternum to 7th rib, cartilages of ribs 2-6

pectoralis major insertion

intertubercular sulcus of humerus

pectoralis major innervation

medial and lateral pectoral nerves

pectoralis major action

flexes and adducts shoulder, rotates shoulder medially

latissimus dorsi origin

spinous process of T7-L5, iliac crest

latissmus dorsi insertion

humerus (intertubercular sulcus)

latissimus dorse innervation

thoracodorsal nerve

latissimus dorsi action

extends, adducts, and medially rotates shoulder