Those are the three main organs that pertain to body fluids in the body.
However, when you get to the 3:41 mark in the video, or check page 47 of the workbook, you’ll see that the Lungs, Spleen, Stomach, Small Intestine, Large Intestine, Kidney, Urinary Bladder, and Triple Warmer/Energizer are all responsible for transforming and transporting Body Fluids.