This pathway provides an in-depth look at physical characteristics of urine, gross anatomy of urine transport, gross anatomy of the kidney, microscopic anatomy of the kidney, physiology of urine formation, tubular reabsorption, regulation of renal blood flow, endocrine regulation of kidney function, regulation of fluid volume & composition, and the urinary system & homeostasis. The pathway also provides vocabulary support for these topics, as well as opportunities for learners to self-assess their understanding by analyzing figures and answering questions.