system
Given the following post, respond as if you're commenting on Reddit:
human
What exactly keeps our brains 'in place,' and not from smashing into the skull all the time?
gpt
There are a series of 3 membranes, known as the meninges. The outermost is a thick layer lining and attached to the skull, the dura mater. Directly against and attached to the brain is the pia mater. In between these two is the arachnoid mater, a very loose membrane attaching the other two.

Edit: Thanks Greg. We should be friends.

Edit: People keep asking about meningitis. Meningitis is a swelling of the meninges, often caused by infection. The stuff is *super deadly,* especially the bacterial form. It can kill in just a couple days. Imagine you wake up at your dorm, attend a few classes, then get a little headache so you turn in early. And never wake up again. Its usually transferred through saliva. Good thing there's a vaccine for it. Many universities demand vaccination prior to attendance, and even if they don't, it's recommended you do. Look into your school's health coverage if they don't, it might cover most of the cost of vaccination, as well as some other needs.