Sagittal Section of head with infratemporal Fossa Dissection - Erler Zimmer

Sagittal Section of head with infratemporal Fossa Dissection - Erler Zimmer

This 3D model showcases a dissected right male pelvis, precisely sectioned just above the L5 vertebra and along the midsagittal plane, while preserving the thigh up to the midpoint of the femur. This specimen complements our LW 91 female hemipelvic model and thigh.
The common iliac artery is kept intact, revealing several vital branches, notably the distribution of the internal iliac artery within the true pelvis. Several significant vessels, including the obturator artery and the partially occluded umbilical artery, extend toward the anterior abdominal wall (contributing to the formation of the medial umbilical ligament) and give rise to the superior vesical artery. Meanwhile, the origins of the iliolumbar, superior gluteal, inferior gluteal, and internal pudendal arteries can be observed laterally to the urinary bladder. The ureter descends superficially alongside these vessels as it approaches the urinary bladder, which is enveloped by peritoneum in this model. The ductus deferens is exposed from its entry into the space via the deep inguinal ring and courses posteriorly (although it is deviated from its typical insertion path and rests atop the internal iliac artery). Adjacent to the ureter and on the outer surface of the psoas major muscle, an enlarged iliac lymph node and a portion of the lymphatic vasculature ascending along the external iliac artery are visible. The majority of the pelvis remains undissected, allowing for the examination of the rectovesicular pouch and the exposed superior rectal artery and vein as they approach the preserved segment of the rectum. In cross-section, the rectum, seminal vesicle, and prostate come into view (the section plane includes portions of both the prostatic urethra and ejaculatory duct).

In the anterior thigh, the boundaries and contents of the femoral triangle are meticulously preserved, with partial coverage by the anterior abdominal wall flap. Posteriorly, the skin over the gluteal region and the gluteus maximus muscle have been removed in sequential layers to reveal the underlying structures, including the gluteus medius and minimus muscles, the piriformis muscle, the obturator internus with gemelli muscles, and the quadratus femoris muscle. The superior and inferior gluteal arteries are positioned superior and inferior to the piriformis muscle, respectively, with the sciatic nerve exiting below the piriformis before passing beneath the retained portion of the gluteus maximus.