Part 1: Nephron model- In this investigation you will construct a model of a nephron, the filtering unit of the kidney, using a semipermeable membrane to filter a solution (containing the congo red dye, yellow food coloring and water) which simulates blood as it is entering the kidney via the renal artery. The resulting filtrate resembles urine. As the experiment progresses, notice the filtration occurring with the nephron (dialysis tubing) and the resulting substances being taken out of the ‘blood’. 

Part 2: Urinary System Model- Using a timer, bowl, strainer, and bag of “Blood" (White beans, Red beans, Rice, Brown rice representing the Bladder, Nephron (Kidney), WBC, RBC, Wastes (Urea & Creatinine), Drugs you will filter your bag of blood in approximately one minute (same amount of time it takes for ¼ of your cardiac output to be filtered). 

Part 3: Osmoregulation Data Analysis- In this investigation, we will consider some data taken from one person exercising on different days. Each day they were given different amounts of water as they exercised for 3 hours at the same intensity level.