Table V

Laying in the iliac fossa, the iliacus muscle which is linked, in the middle, to the psoas major which comes downwards along the lumbar column, can be observed . Sideways to the iliacus muscle, separated from the latter by the interposition of the rectus femoris muscle (here resected), appear the anterior margins of the minimus and medius glutei heading to the greater trochanter of the femur. On the front side of the sacrum are the two piriformis muscles, the left one being amputated. Connected to the outline of the obturator foramen is the obturator externus muscle; below it, one can see the quadratus femoris arising from the ischial tuberosity. Deeper inside we can see the gluteus maximus, and in front of it the beginning of three muscles; one can recognize among them, the semimembranosus in the foreground and, below it, the semitendinosus and the long head of the biceps femoris protruding into the inside and to the side, respectively. Finally, one can see under the symphysis pubis, the bulb of the corpus spongiosum of the urethra, enclosed in the bulbospongiosi muscles and, to the side of these, along the rami of pubis and ischium, the root of the left corpus cavernosum penis encircled by the ischiocavernosus muscle. Between the ischiocavernosus muscle and the corresponding bulbospongiosus stretches the transversus perinei superficialis.