Your right colon is larger than your left (I think that’s what you meant by the going up/down comment- the colon is just pretty much a large tube, but it does taper off as it gets to the end). The Up/Down difference could be applied then to everything- your small interesting go in all sorts of weird directions! But physically- your right colon (the “up”) is larger than your left (the “down”).
Also, breasts tend to be asymmetrical as well. Each side responds differently to the amount of hormones in your body, and hence the asymmetry- same applies for males with gynecomastia (feminization of the chest/appearance of breasts due to excess estrogen), they too will have usually one larger than the other.
Also, your blood vessels aren’t the same throughout your body, you have some connections on your Left side that you don’t have on your right, and vice versa. Though with circulation you could almost say that almost EVERYONE has got some unique or different pattern going on in thier body- some functional change that will never really go noticed (unless it becomes a problem).
That’s why in Anatomy class, the professors had a saying:
“If you’ve seen one body, well then you’ve *one *body.”
Also, one Kidney tends to hang lower than the other/be slightly asymmetrical as well and not just randomly, but it was related to the testes thing in males. But I cannot recall the information right now, so I’ll leave that one unverifiable for now.
But yes, the body is filled with PLENTY of variations and asymmetry from size to shape to actual locations and organs that are only on one side vs. the other. And this isn’t even considering things like abnormalities in development, a whole nother topic of assymetries and craziness. Oh, and on the subject of situs inversus-
There’s also Transposition of the Great Vessels- this is a very serious congenital abnormality where your pulmonary arteries go from the left ventricle of the heart (rather than the right ventricles), and the Aorta arises out of the Right Ventricle (rather than the left ventricle). So in effect rather than one long closed off circulatory systems, you have two of them with them not really connected*
*This isn’t quite true there actually are connections in between the two systems as the lil’ guy would still have all your shunts still keeping you going as a fetus, but needless to say- life outside of the womb gets REAL serious real quick for the infant.