Muscles that Move the Arm Flashcards
Deltoid Origin
Scapular spine and acromial end of clavicle
Deltoid Insertion
Deltoid tuberosity of humerus
Deltoid Action
Abduction of arm at shoulder
Supraspinatus Origin
Supraspinous Fossa
Supraspinatus Insertion
Greater tubercle of humerus
Supraspinatus Action
Abduction of arm at shoulder
Subscapularis Origin
Subscapular fossa of scapula
Subscapularis Insertion
Lesser tubercle of humerus
Subscapularis Action
Medial rotation of arm at shoulder
Teres Major Origin
Inferior angle of scapula
Teres Major Insertion
Intertubercular sulcus of humerus
Teres Major Acton
Adduction and medial rotation at the shoulder
Infraspinatus Origin
Infraspinatus fossa
Infraspinatus Insertion
Greater tubercle of humerus
Infraspinatus Action
Lateral rotation
Teres Minor Origin
Lateral border of scapula
Teres Minor Insertion
Greater tubercle below insertion of infraspinatus
Teres Minor Action
Lateral rotation of arm at the shoulder
Pectoralis Major Origin
Clavicle, sternum and ribs 1-6
Pectoralis Major Insertion
Intertubercular sulcus of humerus
Pectoralis Major Action
Adduction, medial rotation, flexion at the shoulder
Triceps Brachii Origin
Lateral Head: Superior region of humerus
Long Head: Infraglenoid Tubercle
Medial Head: Posterior region of humerus
Triceps Brachii Insertion
Olecranon Process of the ulna
Triceps Brachii Action
Extension at elbow
Latissimus Dorsi Origin
Ribs 8-12, vertebrae T7-L5
Latissimus Dorsi Insertion
Inter tubercle groove of humerus
Latissimus Dorsi Action
Extension, adduction, and medial rotation of the arm
