system
Given the following post, respond as if you're commenting on Reddit:
human
[Spider-Man Films] Where are the organs that produce Spider-Man's webs kept? Did he just grow new organs/glands after being bitten by the spider?

Talking about the Raimi films if that wasn't clear.

If the organ/gland grew in, I assume they pushed everything else to the side, so is Peter Parker just walking around with swollen wrists or something?

Also does he get a buildup if he doesn't shoot webs often enough?
gpt
I just assume he grew some spinnerets between his radius and ulna. He packed on a bit of muscle mass literally overnight, plus given his proportionate muscle strength, any slight loss of muscle mass in his forearms to make way for them (if any) wouldn't affect him too much.