Muscles that move the shoulder

Supraspinatus

action: Initiate abduction of the humerus

Infraspinatus muscle

Teres Minor

origin: Axillary Border of the Scapula

Glenohumeral Joint

Subscapularis

Pectoralis Major

“breast”

Latissimus Dorsi

Deltoids

Teres Major

Supraspinous Fossa

depression in the bone above the spine of the scapula

origin of the supraspinatus

Infraspinous Fossa

depression in the bone below the spine of the scapula

Subscapular Fossa

depression in the bone under the scapula

Greater Tubercle of the Humerus

larger of the two bony protuberances on the humerus

Lesser Tubercle of the Humerus

smaller of the two bony protuberances on the humerus

Upper Axillary Border of the Scapula

upper edge of the scapula closest to the armpit

Subscapularis Muscle

Greater Tubercle of the Humerus - Superior Facet

insertion of the supraspinatus

Infraspinous Fossa

origin of the infraspinatus

Greater Tubercle of the Humerus - Middle Facet

insertion of the infraspinatus

Axillary Border of the Scapula

origin of teres minor

Greater Tubercle of the Humerus - Inferior Facet

insertion of teres minor

Subscapular Fossa

origin of subscapularis

Lesser Tubercle of the Humerus

insertion of subscapularis

Actions of infraspinatus and teres minor

Lateral rotation of the humerus

Action of subscapularis

Medial rotation of the humerus

Stabilization of the glenohumeral joint

important function of all four rotator cuff muscles

Medial Clavicle

portion of the collarbone closest to the midline of the body

Sternum

name of the breast bone

Medial Clavicle

origin of the clavicular portion of pectoralis major

Upper 6 Ribs

origin of the sternal portion of pectoralis major

Lateral Lip of the Bicipital Groove

insertion of the pectoralis major

Actions of pectoralis major

Medial rotation of the humerus

Flexion of the glenohumeral joint

Horizontal flexion of the glenohumeral joint

Sacrum

fusion of the five vertebrae sitting between the two sides of the pelvis

Crest of the Ilium

upper ridge of the larger flat bone of the pelvis

origin of latissimus dorsi part of the pelvis

Bicipital Groove

groove at the top of the humerus that the biceps tendon passes through

Inferior Angle of the Scapula

corner of the scapula that is farthest from the head

Vertebrae T7-L5

vertebrae part of the origin of latissimus dorsi

Inferior Angle of the Scapula

origin of the latissimus dorsi part of the scapula

Bicipital Groove

insertion of the latissimus dorsi

actions of the humerus that the latissimus dorsi can do

Medial rotation of the humerus at the glenohumeral joint

action of the scapula can latissimus dorsi do

Depression of the scapula

Inferior Angle of the Scapula

corner of the scapula farthest from the head

Medial Lip of Bicipital Groove

depression at the top of the humerus where teres major attaches

Teres

rounded

Teres Major

Inferior Angle of the Scapula

origin of the teres major

Bicipital Groove

insertion of the teres major

Actions of the teres major

Medial rotation of the humerus at the glenohumeral joint
Adduction of the humerus at the glenohumeral joint
Extension of the humerus at the glenohumeral joint

Clavicle - Lateral Third

anatomical name of the collarbone

Acromion Process

projection of bone that comes off of the scapula

Deltoid Tuberosity

bump on the humerus where all three deltoids attach

Deltoid Muscle

Lateral Clavicle

Acromion Process

origin of the lateral portion of the deltoids

Spine of the Scapula

origin of the posterior portion of the deltoids

Deltoid Tuberosity

insertion of the deltoids

action do all portions of the deltoids contribute to

Abduction of the humerus at the glenohumeral joint

actions do only the anterior portion of the deltoids do

Flexion of the humerus at the glenohumeral joint

Medial rotation of the humerus at the glenohumeral joint

actions do only the posterior portion of the deltoids do

Extension of the humerus at the glenohumeral joint

Lateral rotation of the humerus at the glenohumeral joint