system
Given the following post, respond as if you're commenting on Reddit:
human
When you get a nose bleed, where is the blood coming from?
gpt
Usually it comes from 2 different areas. Anterior  nosebleeds are common as they come from a collection of  vessels from the septum (the part that splits your nostrils into 2 chambers) called the Kiesselbach plexus, an massive interconnection of various arteries. This is also why pinching your nose can stop bleeding. A posterior nose bleed is hard to pinpoint as pinching won’t stop bleeding and the source could be a number of things.