system
Given the following post, respond as if you're commenting on Reddit:
human
Why do humans/mammals bleed from the mouth after head/chest trauma? Why is this always the imminent death factor in movies?
gpt
Think of what the mouth connects to - your lungs, stomach, and the passageways to your nose and ears. Head/chest trauma can lead to bleeding into one of those areas, which is usually a sign things are going pretty wrong.