Estrella Mountain Community College
Estrella Mountain Community College: The Execretory System and Nephrons
This resource provides general information about the human excretory system and kidneys, and a section only about nephrons. It includes several pictures, diagrams and explanations for understanding.
OpenStax
Open Stax: Anatomy & Physiology: Microscopic Anatomy of the Kidney
Students learn about the renal structures that conduct the essential work of the kidneys and cannot be seen by the naked eye.