Keywords: S-1 / S-2 interganglion region, ala of sacrum, anterior spinal artery, calcaneal tendon, corpus spongiosum, dorsal horn of grey matter, extensor digitorum longus tendon, extensor hallucis longus tendon, fibula, fibularis longus and fibularis brevis muscles, flexor digitorum longus tendon, flexor hallucis longus muscle, fused paramesonephric ducts, gluteus medius muscle, greater trochanter of femur, hip joint, ischial tuberosity, ischiopubic ramus, metatarsal 1, penile urethra, penis, phalynx of digit 2 (foot), piriformis muscle, rectum, sacro-iliac joint, sciatic nerve, scrotal swelling, sympathetic trunk, tibia, tibialis anterior tendon, tibialis posterior tendon, vas deferens, ventral horn of grey matter
Source: The Virtual Human Embryo.