What are similarities and differences between the fetal pig sacral plexus and the human sacral plexus?

Fetal pig sacral plexus and human sacral plexus one of their similarity is that their nerve affects the lower limb in both. They still both have fem, sciatica, and tibial nerves. Both of them they don't have much difference but pigs are Quadrupedal and humans are bipedal.
The human liver has four lobes while fetal pig its liver has fives lobes. Human sacral they don't have bicarotid trunk while fetal pig has.

Resistance than a bicycle? i'm not entirely sure