 | Term | Definition |
| |
origin of supraspinatus |
supraspinous fossa of scapula |
| |
insertion of supraspinatus |
greater tubercle of humerus and the shoulder joint capsule |
| |
function of supraspinatus |
glenohumeral abduction & stabilization |
| |
innervation of supraspinatus |
suprascapular nerve (C5-6) |
| |
origin of infraspinatus |
infraspinous fossa of scapula |
| |
insertion of infraspinatus |
greater tubercle of humerus and the shoulder joint capsule |
| |
function of infraspinatus |
glenohumeral external rotation & stabilization |
| |
innervation of infraspinatus |
suprascapular nerve (C5-6) |
| |
origin of teres minor |
lateral border of scapula |
| |
insertion of teres minor |
greater tubercle of humerus and the shoulder joint capsule |
| |
function of teres minor |
glenohumeral external rotation & stabilization |
| |
innervation of teres minor |
axillary nerve (C5-6) |
| |
origin of subscapularis |
subscapular fossa |
| |
insertion of subscapularis |
lesser tubercle of humerus and the shoulder joint capsule |
| |
function of subscapularis |
glenohumeral internal rotation, adduction, & stabilization |
| |
innervation of subscapularis |
upper & lower subscapular nerves (C5-6) |
| |
muscles that make up the rotator cuff |
supraspinatus, infraspinatus, teres minor, subscapularis |
| |
origin of deltoid |
lateral 1/3 of clavicle, acromion and spine of scapula |
| |
insertion of deltoid |
deltoid tuberosity of humerus |
| |
function of anterior deltoid |
shoulder flexion & internal rotation |
| |
function of middle deltoid |
abduction |
| |
function of posterior deltoid |
extension, horizontal abduction, & external rotation |
| |
innervation of deltoid |
axillary nerve (C5-6) |
| |
origin of coracobrachialis |
coracoid process of scapula |
| |
insertion of coracobrachialis |
middle 1/3 of medial humerus |
| |
function of coracobrachialis |
flexion & adduction |
| |
innervation of coracobrachialis |
musculocutaneous nerve (C5-7) |
| |
origin of clavicular head of pectoralis major |
medial 1/3 of clavicle |
| |
origin of sternocostal head of pectoralis major |
sternum & ribs 1-6 |
| |
insertion of pectoralis major |
lateral lip of bicipital groove of humerus |
| |
function of both heads of pectoralis major |
adduction, horizontal adduction, & internal rotation |
| |
function of clavicular head of pectoralis major |
1st 60 degrees of flexion |
| |
function of sternocostal head of pectoralis major |
1st 60 degrees of extension, starting at 180 degrees of flexion |
| |
innervation of clavicular head of pectoralis major |
lateral pectoral nerve (C5-6) |
| |
innervation of sternocostal head of pectoralis major |
medial pectoral nerve (C7-T1) |
| |
origin of latissimus dorsi |
T7-12 spinous processes, thoracolumbar fascia, iliac crest, and inferior 3-4 ribs |
| |
insertion of latissimus dorsi |
floor of bicipital groove of humerus |
| |
function of latissimus dorsi |
extension, adduction, internal rotation, & shoulder girdle depression |
| |
innervation of latissimus dorsi |
thoracodorsal nerve (C6-8) |
| |
origin of teres major |
inferior angle of scapula |
| |
insertion of teres major |
medial lip of bicipital groove of humerus |
| |
function of teres major |
extension, adduction, & internal rotation |
| |
innervation of teres major |
lower subscapular nerve (C6-7) |
