In almost every case, fetal pigs have the same muscles as humans, with some small variations in the size and location of some muscles related to the fact that pigs are quadrupedal and humans are bipedal. For example, the major chest and abdominal muscles found in humans are present in the pig. There are some differences in the location of chest muscles that attach to the shoulder girdle. In the hind limb, the pig has the same muscles as humans in the major thigh muscle groups: quadriceps femoris and the hamstrings
