system
Given the following post, respond as if you're commenting on Reddit:
human
What is my belly button connected to inside my body?
gpt
The belly button's connected to the- falciform ligament/round ligament; the falciform ligament/round ligament is connected to the- liver; the liver's connected to the- all sorts of things (inferior vena cava, gallbladder, portal vein, hepatic artery, etc).