<prompt> Epiploic foramen provides communication between greater and lesser sacs. The length of the epiploic foramen is:5 cm6 cm4 cm3 cm  <response>: The greater and lesser sacs communicate with each other through the epiploic foramen of Winslow. The foramen is about 3 cm in size and situated opposite the 12th thoracic veebra. Ref: Moon D.A., Foreman K.B., Albeine K.H. 2011. Chapter 8. Serous Membranes of the Abdominal Cavity. In D.A. Moon, K.B. Foreman, K.H. Albeine Eds, The Big Picture: Gross Anatomy. 