MYOLOGY, OR MUSCULATURE 



40 



Lumbar triangle of Petit 



Semilunar line of Spigelius 



Transversal fascia (O. T. transverse 

 fascia) 



Inguinal canal 



Abdominal inguinal ring (O. T. in- 

 ternal abdominal ring) 



Interfoveolar ligament (O. T. Hessel- 

 bach's ligament) 



Epigastric fold 



Lateral inguinal fovea 



Medial inguinal fovea 



Supravesical fovea 



Coccygeal muscles 



Coccygeal muscle 



Anterior sacrococcygeal muscle 



Posterior sacrococcygeal muscle 



Muscles of the upper extremity 



Deltoid muscle 

 Supraspinous muscle 

 Infraspinous muscle 

 Smaller round muscle 

 Larger round muscle 

 Subscapular muscle 

 Biceps muscle of upper arm 



Long head 



Intertubercular mucous sheath 



Short head 



Fibrous lacertus ("muscle") (O. T. 



bicipital fascia) 

 Coracobrachial muscle 

 Brachial muscle (O. T. brachialis an- 



ticus) 

 Triceps muscle of upper arm 



Long head 



Lateral head 



Medial head 

 Elbow muscle 

 Epitrochlear elbow muscle 

 Round pronator muscle (O. T. pro- 

 nator radii teres) 



Humeral head 



Ulnar head (O. T. coronoid head) 

 Radial flexor muscle of wrist 

 Long palmar muscle 

 Ulnar flexor muscle of wrist 



Humeral head 



Ulnar head 

 Superficial flexor muscle of fingers 



Humeral head 



Radial head 



Deep flexor muscles of fingers 

 Long flexor muscle of thumb 

 Quadrate pronator muscle 

 Brachioradial muscle (O. T. supinator 



longus) 



Long radial extensor muscle of carpus 

 Short radial extensor muscle of carpus 

 Common extensor muscle of fingers 



Junctions of the tendons; aponeu- 



rotic bridges 

 Proper extensor muscle of fifth finger 



(O. T. extensor minimi digiti) 

 Ulnar extensor muscle of wrist 

 Supinator muscle (O. T. supinator 



brevis) 

 Long abductor muscle of thumb (O. T. 



extensor ossis metacarpi pollicis) 

 Short extensor muscle of thumb (O. T. 



extensor primi internodii pollicis) 

 Long extensor muscle of thumb (O. T. 



extensor secundi internodii pollicis) 

 Proper extensor muscle of index-finger 



(O. T. extensor indicis) 

 Short palmar muscle 

 Short abductor muscle of thumb (O. 



T. abductor pollicis) 

 Short flexor muscle of thumb 

 Opposing muscle of thumb 

 Adductor muscle of thumb 

 Abductor muscle of fifth finger 

 Short flexor muscle of fifth finger 

 Opposing muscle of fifth finger 

 Lumbrical muscles 



