Deep muscle system origin and insertions

Rhomboid

origin: rhomboid major and minor

insertion: spines of thoracic vertebrae

Rhomboid capitis

origin: levator scapulae

insertion: superior nuchal line

Internal abdominal oblique

origin: lumbodorsal fascia and pelvis

insertion: linea alba

Transverse abdominis

origin: ilium, lumbar vertebrae

insertion: linea alba

Subscapularis

origin: subscapular fossa

insertion: lesser tuberosity of humerus

Supraspinatus

origin: supraspinous fossa

insertion: greater tuberosity of humerus

Infraspinatus

origin: infraspinous fossa

insertion: greater tuberosity of humerus

Teres major

origin: caudal border of scapula

insertion: medial humerus

Triceps long head

origin: caudal border of scapula

insertion: olecranon of ulna

Triceps lateral head

origin: deltoid ridge of humerus

insertion: olecranon of ulna

Triceps medial head

origin: humerus

insertion: olecranon of ulna

Brachialis

origin: lateral humerus

insertion: proximal ulna

Brachioradialis

origin: midhumerus

insertion: styloid process of radius

Extensor carpi radialis longus

origin: distal humerus

insertion: second metacarpal

Extensor carpi ulnaris

origin: lateral epicondyle of humerus

insertion: fifth metacarpal

Flexor carpi ulnaris

origin: medial epicondyle of humerus

insertion: pisiform bone

Biceps brachii

origin: supraglenoid tubercle

insertion: radial/bicipital tuberosity

Pronator teres

origin: medial epicondyle of humerus

insertion: medial border of radius

Supinator

origin: lateral epicondyle of humerus

insertion: radius

Semitendonosus

origin: ischium

insertion: tibia

Semimembranosus

origin: ischium

insertion: medial epicondyle of femur

Rectus femoris

origin: pubic symphysis

insertion: patella

Vastus lateralis

origin: shaft of femur

insertion: patella

Vastus intermedius

origin: femur

insertion: patella

Vastus medialis

origin: greater trochanter of femur

insertion: patella