Credit: Richard Cartwright/ABC Television Group © 2011 Disney Photo: Jackson on Grey's Anatomy September 29, 2011

The stampede at the convention during Grey's Anatomy Season 8, Episode 4: “What Is It About Men” (and the fallout thereof) caused some pretty gnarly injuries needing serious operations with strange names. In case you're curious about all the medical lingo, we've done some digging and found out what the scoop is on these surgeries.

When the convention attendee was trampled, he lost his ear and his spine was crushed at C6, which is a specific vertebra (a section of spine) close to the neck. Before getting booted off the surgery, Alex (Justin Chambers) outlined a plan to do discectomies above and below that vertebra. A discectomy is an operation that removes spinal disc material that is herniated (out of whack, basically) and pressing on vital things like nerve roots or the spinal cord itself.

After Carter got his hobbit ass handed to him on a platter while trying to defend April Kepner (Sarah Drew), his peritoneal cavity filled with blood. The peritoneal cavity is a space that can form between the parietal peritoneum and visceral peritoneum. Got it? Okay, great! Just kidding, we wouldn't leave you in the lurch like that. Those two peritoneums are the two membranes that separate the abdominal organs from the abdominal wall. Let's all thank them for that job right now, okay?

Don't forget to check out our recap of Grey's Anatomy Season 8, Episode 4: "What Is It About Men."

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