Your rectum has an internal and external sphincter. When the internal sphincter encounters pressure there’s a whole neural pathway that decides whether to let the external sphincter relax based on if it’s gas or solid.
Your rectum has an internal and external sphincter. When the internal sphincter encounters pressure there’s a whole neural pathway that decides whether to let the external sphincter relax based on if it’s gas or solid.
sem@piefed.blahaj.zone 2 weeks ago
If you can smell a fart, you are smelling poop aerosols.
MolochAlter@lemmy.world 2 weeks ago
Not necessarily, gasses smell too.
sem@piefed.blahaj.zone 2 weeks ago
I hadn’t considered this! So when you poop in the toilet, the bad smell is partially from gases, not entirely from airborne poop particles?
I’m also really sketched out about how belly button lint is from underwear, but i guess that’s off the topic.
MolochAlter@lemmy.world 2 weeks ago
Definitely partly from the gaseous byproducts of digestion, yes.
Also poop aerosols, but not exclusively.
SaveTheTuaHawk@lemmy.ca 2 weeks ago
The odor is from sulphide gases.
sem@piefed.blahaj.zone 2 weeks ago
Sulfide gas smells different, more like rotten eggs.
Farts smell like poop.