Eric Dane Has Bulging Biceps

Eric Dane, aka Dr. Mark “McSteamy” Sloan, whips out the big guns while filming his hit ABC drama, Grey’s Anatomy, in Los Angeles on Monday morning.

In between flexing his bulging biceps, the 35-year-old actor shot scenes with costars Katherine Heigl, Patrick Dempsey and Brooke Smith.

As reported last month, former Journeyman star Kevin McKidd, 34, will play join Grey’s Anatomy as a doctor who arrives at Seattle Grace after a stint in Iraq.

The Seattle Grace doctors return in a two-hour premiere on Thursday, Sept. 25 at 9PM ET/PT on ABC.

10+ pictures inside of Eric Dane‘s bulging biceps…