THE ILIAC 



Gemellus superior. 

 Obturator interims. 

 Geniellus inferior. 

 Obturator externus. - 

 Quadratus femoris. 



Posterior Femoral Region. 

 Biceps. 



Seuiitendinosus. 

 Semimembranosus. 



LEG. 



Anterior Tibio-nbular Region 

 Tibialis anticus. 

 E.vcnsor longus digitorum. 

 Extensor proprius hallucis. 

 Peroneus tertius. 



Posterior Tibio-fibular Region. 



Superficial Layer. 

 Gastrocnemius. 

 Plantaris. 

 Soleus. 



Deep layer. 

 Popliteus. 



Flexor longus hallucis. 

 Flexor longus digitorum. 

 Tibialis posticus. 



Fibular Region. 



Peroneus longus. 

 Peroneus brevis. 



FOOT. 



Dorsal Region. 

 Extensor brevis digitorum. 



Plantar Region. 



First Layer. 

 Abductor hallucis. 

 Flexor brevis digitorum. 

 Abductor minimi digiti. 



Second Layer. 

 Flexor accessorius. 

 Lumbricales. 



Third Layer. 



Flexor brevis hallucis. 

 Adductor obliquus hallucis. 

 Flexor brevis minimi digiti. 

 Adductor transversus pedis. 



Fourth Layer. 

 The Interossei. 



Psoas niagnus. 



ILIAC REGION. 

 Psoas parvus. 



Iliacus. 



Dissection. Xo detailed description is required for the dissection of these muscles. On 

 the removal of the viscera from the abdomen they are exposed, covered by the peritoneum and 

 a thin layer of fascia, the iliac fascia. 



The iliac lascia 1 is the aponeurotic layer which lines the back part of the 

 abdominal cavity, and covers the Psoas and Iliacus muscles throughout their whole 

 extent. It is thin above, and becomes gradually thicker below as it approaches 

 the crural arch. It is a part of the general ffi#ci>.i transversals. 



The portion covering the Psoas is attached, above, to the ligamentum arcuatum 

 internum : internally, by a series of arched processes to the intervertebral substances 

 and prominent margins of the bodies of the vertebrae, and to the upper part of the 

 sacrum, the intervals so left, opposite the constricted portions of the bodies, 

 transmitting the lumbar arteries and filaments of the sympathetic nerve. Ex- 

 ternally, above the crest of the ilium, this portion of the iliac fascia is continuous 

 with the anterior lamella of the lumbar fascia (see page 433), but below the crest 

 of the ilium it is continuous with the fascia covering the Iliacus. 



The portion investing the Iliacus is connected externally to the whole length 

 of the inner border of the crest of the ilium, and internally to the brim of the 

 true pelvis or iliac pfirtion of the ilio-pectineal line, and at the ilio-pectineal emi- 

 nence it receives the tendon of insertion of the Psoas parvus. when that muscle 

 exists. External to the femoral vessels, this fascia is intimately connected to the 

 posterior margin of Poupart's ligament, and is continuous with the fascia traiis- 

 versalis. Internal to the vessels it is attached to the ilio-pectineal line behind the 

 conjoined tendon, where it is again continuous with the transversalis fascia ; and, 



1 The student must not confound this fascia with the iliac portion of the fascia lota (see p. 508). 



