So to be clear, you want to have an understanding of the anatomy in the functionality of all the components within the urinary system, including the kidney the bladder and the urethra. Do you want to understand how the urinary system coordinates with the cardiovascular and respiratory systems. You need to be crystal clear that you understand how urine is formed. You need to know all about nephron and what they do. You need to know the three steps of how urine is formed. Urine excretion, ADH, and