6. Skin the urogenital triangle. Identify the pudendal neurovascular branches. Clean the erectile bodies and reflect them from their attachments on one side. Identify the perineal membrane and sphincter urethrae m.
Begin the dissection of the urogenital triangle by removing the skin of the labia majora and minora. Now, looking at the left side, identify the pubic symphysis, the vestibule of the vagina, the anal canal, the uterus, and the bladder. Identify the clitoris, its prepuce, and its frenulum. Remove the fat from the urogenital triangle to identify the structures within it. Identify the perineal membrane and the erectile bodies of the clitoris and the perineal nerves and its posterior labial branches. The perineal membrane can be seen between the crus and vestibular bulb. The ischiocavernosus muscle lies on the crus of the clitoris and the corpus cavernosum extends as its shaft. The bulbospongiosus muscle covers the vestibular bulb. Reflecting the ischiocavernosus muscle reveals the crus of the clitoris, or the corpus cavernosum, which unites with the vetibular bulb to form the shaft of the clitoris.