When the bile can not be properly propelled from the not-mechanically-obstructed gallbladder or can not flow out of the end of the common bile duct properly, there is a state of biliary dyskinesia. So, biliary dyskinesia is a dynamically (functional...not fixed mechanical) obstructive, pain-producing disorder.
Two sections each with 20 questions, 35 minutes for each section. Each quantitative reasoning section (also common called the Math GRE sections) contains a mix of multiple choice, quantitative analysis, and user input questions.
The test is since autumn 2011 divided into two parts - a quantitative and a verbal part of 80 questions each. The quantitative and the verbal parts are both divided into four sections each with different types of questions. The test has a total of 160 questions, divided into four subtests of 40 questions each.