Exam (elaborations) BIO 202L Lab 14 Worksheet- The Urinary System

Pre-Lab Questions 1.What is the function of the ureter? The ureters carry urine from the kidneys to the urinary bladder. 2.Compare and contrast the male and female urethra. The male uretha is much longer than the female urethra measuring about 15-20 cm long. In the males, the urethra carries urine as well as semen. In contrast, the female urethra is only about 4cm long. 3.Describe the two layers of the kidneys. The two layers of the kidneys are the cortex and the medulla. The cortex is the outer region of the kidney. It contains about a million blood filtering nephrons. The inner layer is the medulla. It contains 8-12 renal pyramids that empty into the calyx. Experiment 1: Kidney Filtration Table 1: Solutions Present in Each Container Before 60 Minutes Submersion