13: The Urinary System Last updated Feb 28, 2025 Save as PDF 12.9: Glossary- The Digestive System 13.1: Introduction Page ID84780 Lumen LearningLumen Learning ( \newcommand{\kernel}{\mathrm{null}\,}\) 13.1: Introduction13.2: Physical Characteristics of Urine13.3: Gross Anatomy of Urine Transport13.4: Gross Anatomy of the Kidney13.5: Microscopic Anatomy of the Kidney13.6: Age Related Changes to the Urinary System13.7: Age Related Dysfunctions of the Urinary System13.8: Glossary- The Urinary System