system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do you really cough out blood when you get stabbed/shot like in the movies? If yes, where does it travel from?

I've been watching too many movies and every scene I saw where someone gets stabbed/impaled, blood comes out of their mouth. Is it true or is it just for dramatic effect?

Edit: Thanks a lot guys! I learned a lot. This has been in the back of my head for ages and I didn't really know who to ask. Mostly because I'd see a scene where someone would get stabbed in their lower abdomen region and they'd splurt out blood, like "Where did that come from???"
gpt
If you catch a wound that compromises your lungs, airways, or esophagus you could definitely cough up some blood.

Movies tend to use it for dramatic effect because it's a fairly non-gruesome way to send the message that a character is grievously wounded.