Walking Tall

"The body has approximately eleven organ systems, all doing different things at the same time. In order to keep us functioning, or, well, alive, they need one voice, a leader, a master. And in our brains, that job belongs to the pituitary gland. It sense the body's needs before they even arise, working non-stop. The pituitary gland communicates with all of the other glands, telling them when to produce the vital hormones we need to function. It keeps everything running smoothly, in perfect order. There's no denying it. It has the toughest job in the place."

- Meredith Grey

 is the second episode of the twelfth season and the 247th overall episode of Grey's Anatomy.

Short Summary
The pressure is on as a determined Bailey tackles her first day as Chief. Meanwhile, April's marriage is in jeopardy and she finds herself unable to address her problems. Meredith struggles to juggle all her responsibilities and Amelia works to define her relationship with Owen.

Main Cast

 * Ellen Pompeo as Dr. Meredith Grey
 * Justin Chambers as Dr. Alex Karev
 * Chandra Wilson as Dr. Miranda Bailey
 * James Pickens, Jr. as Dr. Richard Webber
 * Sara Ramírez as Dr. Callie Torres
 * Kevin McKidd as Dr. Owen Hunt
 * Jessica Capshaw as Dr. Arizona Robbins
 * Sarah Drew as Dr. April Kepner
 * Jesse Williams as Dr. Jackson Avery
 * Caterina Scorsone as Dr. Amelia Shepherd
 * Camilla Luddington as Dr. Jo Wilson
 * Jerrika Hinton as Dr. Stephanie Edwards
 * Kelly McCreary as Dr. Maggie Pierce
 * Jason George as Dr. Ben Warren

Guest Stars

 * Giacomo Gianniotti as Dr. Andrew DeLuca
 * Joe Adler as Dr. Isaac Cross
 * Lindsay Kay Hayward as Jade Bell

Co-Starring

 * Chris Muto as Nurse Michael
 * Laura Harper as O.R. Nurse

Patient

 * Diagnosis:


 * Doctors:


 * Treatment:

Notes and Trivia

 * This episode's title originated from the song , originally sung by Lyle Lovett.
 * This episode scored million viewers.
 * The table read for this episode took place on July 28, 2015.
 * This episode will feature a character with Marfan's syndrome, which was previously seen in Let It Be.