This part about one lung being 3-lobed I'd never heard before:

"However, our internal organs
are largely asymmetrical. The right lung has 2 lobes whereas the left has 3, the right kidney is
usually lower and wider than the left, and the two ovaries also have significant structural
asymmetries (Davies & Coupland, 1967). Therefore, it appears as though symmetry in the
human body disappears when there is no adaptive pressure to retain it. "