Origin and Insertion Pt. 2

origin of external oblique

external, inferior borders of inferior ribs (ribs 5-12)

insertion of external oblique

linea alba by a broad aponeurosis; iliac crest

origin of internal oblique

iliac crest; lumbar fascia and inguinal ligament

insertion of internal oblique

linea alba; pubic crest; inferior rib surface of ribs 9-12; costal cartilage of ribs 8-10

origin of rectus abdominis

superior surface of pubis near pubic symphysis

insertion of rectus abdominis

xiphoid process of sternum; inferior surface of ribs 5-7

origin of transversus abdominis

linea alba and pubic crest

insertion of transversus abdominis

iliac crest; lumbar fascia and inguinal ligament

origin of pectoralis major

medial clavicle; costal cartilage of ribs 2-6; body of sternum

insertion of pectoralis major

intertubercular sulcus of humerus

origin of pectoralis minor

ribs 3-5

insertion of pectoralis minor

coracoid process of scapula

origin of serratus anterior

anterior, superior surface of ribs 1-8

insertion of serratus anterior

medial border of scapula, anterior surface

origin of trapezius

occipital bone; spinous processes of C7-T12 vertebrae

insertion of trapezius

clavicle; acromion process and spine of scapula

origin of levator scapulae

transverse process of V1-C4 vertebrae

insertion of levator scapulae

superior part of medial border of scapula

origin of rhomboid major

transverse process of T2-T5

insertion of rhomboid major

medial border of scapula, from spine to inferior angle

origin of rhomboid minor

transverse process of C7-T1 vertebrae

insertion of rhomboid minor

medial border of scapula, superior to spine

origin of latissimus dorsi

spinous process of T7-T12 vertebrae; ribs 8-12; iliac crest

insertion of latissimus dorsi

intertubercular sulcus of humerus

origin of deltoid

acromial end of clavicle; costal cartilage of ribs 2-6; body of sternum

insertion of deltoid

deltoid tubercle of humerus

origin of subscapularis

subscapular fossa of scapula

insertion of subscapularis

lesser tubercle of humerus

origin of supraspinatus

supraspinous fossa of scapula

insertion of supraspinatus

greater tubercle of humerus

origin of infraspinatus

infraspinous fossa of scapula

insertion of infraspinatus

greater tubercle of humerus

origin of teres major

inferior lateral border of scapula

insertion of teres major

lesser tubercle and space between greater and lesser tubercle of humerus

origin of teres minor

upper dorsal lateral border of scapula

insertion of teres minor

greater tubercle of humerus

what muscles make up the rotator cuff

subscapularis, supraspinatus, infraspinatus, and teres minor