Vascular corrosion cast. The two longest branches of the internal iliac a. can be identified in this dorsal view of the pelvic region. The caudal gluteal a. (1) exits the pelvic canal through the greater ischiatic notch. The internal pudendal a. (2) exits the pelvic canal caudally, to supply external genitalia. The cranial gluteal a. (3) and the iliolumbar a. (4) can be seen encircling the body of the ilium.

Notice the sacrum (5), ischiatic tuberosity (6), and greater trochanter of the femur (asterisk).

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