Grey's Anatomy's Chandra Wilson & Jason George Put Their Knowledge of Medical Jar…

After spending 12 seasons as an actor on a medical drama like Grey’s Anatomy, you’re bound to commit a few medical terms to memory. Or so you’d think.

In honor of the show’s season 13 premiere, we decided it was time to put OG cast member Chandra Wilson and her on-screen hubby Jason George‘s knowledge of medical jargon to the test. Did they pass with flying colors? Not quite. It looks like Ben and Bailey need to brush up on their studies. (In fairness to Jason, he’s only been with the show since season six. Chandra, on the other hand? We’re not sure what her excuse is!)

To see the pair try their hand at our quiz, be sure to check out the hilarious video above.

When Grey’s finally returns tonight, picking up right where it left off last season, we’ll be smack dab in the aftermath of DeLuca’s (Giacomo Gianniotti) horrific beatdown at the hands of Alex (Justin Chambers), who gravely misunderstood what was going on between Jo (Camilla Luddington) and the hot doc. When the craziness makes its way to Grey Sloan Memorial after Alex delivers DeLuca to make sure he doesn’t die, it’ll be up to Bailey to try and figure out what exactly happened. And if the extended sneak peek of the premiere is any indication, Ben will probably be the one to point her in Alex’s direction after he has a suspicious run-in with Karev. You better get your story straight, Alex!

Whatever may happen, expect Shonda Rhimes to deliver a premiere that’ll kick the season off with a bang. “This season is really hot. I mean, we’re in season 13, but we’re like a brand new show. The storylines are more dynamic and exciting than ever,” Grey’s EP and recurring guest star Debbie Allen told E! News. “That opening episode, which starts next Thursday night, it’s something that’ll knock your socks off, take your breath away, and make you want to keep watching.”

Grey’s Anatomy returns on Thursday, Sept. 22 at 8 p.m. on ABC.