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Illustration of the normal human anatomy of a knee, dorsal view. Shown are the femur, posterior cruciate ligament, anterior cruciate ligament, articular surfaces of the lateral and medial condyles of the femur, lateral meniscus, fibular collateral ligament, fibula, tibia, medial meniscus, and tibial collateral ligament.
Anatomical structure of the penis shaft: corpora cavernosa, corpus spongiosum, urethra, central arteries, connective tissue layers (tunica), dorsal veins and arteries, subcutaneous tissue, and skin. A detail of the corpus cavernosum shows the cavernous sinuses that fill with blood to produce an erection, and the supplying artery and draining vein.