MRCP UK EXAMINATIONS

Detailed explanation-1: -In this system, the abdomen is divided into four regions by drawing a vertical line (dividing on the median or midsagittal plane) and a horizontal line (dividing on the transverse or transumbilical plane) that perpendicularly intersects at the umbilicus (or navel).

Detailed explanation-2: -The right and left hypochondriac regions are found superiorly on either side of the abdomen, while the epigastric region sits between them in a central, superior position. The right and left lumbar regions surround the umbilical region, which is central and has the umbilicus as its centre point.

Detailed explanation-3: -The abdominopelvic cavity can be subdivided into four quadrants and nine regions. The quadrants represent locations; they are formed by a vertical imaginary line drawn through the linea alba from the xiphoid process of the sternum to the pubic symphysis and a horizontal line passing through the umbilicus.

Detailed explanation-4: -The umbilical region is the centermost region deep to and surrounding the umbilicus (navel). The epigastric region is located superior to the umbilical region (epi = upon, above; gastri = belly). The hypogastric (pubic) region is located inferior to the umbilical region (hypo = below).

Detailed explanation-5: -The abdomen surface anatomy is divided into quadrants, regions, and planes, which help to localize the anatomical positions of various abdominal organs. There are four quadrants, which are the right upper quadrant, the left upper quadrant, the right lower quadrant, and the left lower quadrant.