Which quadrant includes the appendix and the right ureter?

Which quadrant includes the appendix and the right ureter?

• A. Right lower quadrant
• B. Left lower quadrant
• C. Left upper quadrant
• D. Right upper quadrant

Answer: (A)

Understanding abdominal quadrants helps locate organs. The abdomen is divided into four sections by a vertical line down the middle and a horizontal line across the belly button, creating the right upper, left upper, right lower, and left lower quadrants. The appendix sits in the right lower quadrant, near where the ileum meets the cecum. The right ureter runs down the right side of the abdomen toward the bladder and passes through the right lower quadrant for a large portion of its course. Because both the appendix and much of the right ureter are located in this region, the right lower quadrant is the quadrant that includes both. The other quadrants contain different organs: left upper houses the stomach and spleen, right upper houses the liver and gallbladder, left lower houses the descending colon and sigmoid.

Understanding abdominal quadrants helps locate organs. The abdomen is divided into four sections by a vertical line down the middle and a horizontal line across the belly button, creating the right upper, left upper, right lower, and left lower quadrants. The appendix sits in the right lower quadrant, near where the ileum meets the cecum. The right ureter runs down the right side of the abdomen toward the bladder and passes through the right lower quadrant for a large portion of its course. Because both the appendix and much of the right ureter are located in this region, the right lower quadrant is the quadrant that includes both. The other quadrants contain different organs: left upper houses the stomach and spleen, right upper houses the liver and gallbladder, left lower houses the descending colon and sigmoid.