The Renal System, Fluid Balance, and Acid–Base Homeostasis

How the Kidneys Keep the Body's Internal Sea in Balance

The Renal System, Fluid Balance, and Acid–Base Homeostasis is Book A8 of The Performance & Human Physiology Encyclopedia — a 93-volume, university-level library on how the human body actually works, system by system. It is written for students, coaches, clinicians and serious self-learners: deep enough that a professional already trained in the field keeps learning, structured clearly enough that a motivated reader can follow every step.

What you will find inside

• The Renal System: Organization and the Logic of Homeostasis
• Anatomy of the Kidney and the Nephron
• Glomerular Filtration
• Tubular Reabsorption and Secretion
• The Loop of Henle and the Countercurrent Mechanism
• Regulation of Water Balance and Osmolarity
• Regulation of Sodium, Volume, and Blood Pressure
• Potassium, Calcium, and Other Electrolytes
• Acid–Base Balance
• The Kidney's Endocrine Functions and Other Roles
• Hydration, Fluid Balance, and Exercise
• When the Kidneys Fail
• Kidney Health in Practice

How this book is written

• University level, without dilution. Exact scientific terminology, defined at first use — mechanisms, not just conclusions.
• Evidence graded, not asserted. Major claims carry a level, from A (strong) to D (expert opinion), so you always know how much weight to give them.
• Numbers, formulas, worked examples. Reference ranges, equations and solved calculations you can apply the same day.
• Myths confronted directly. Where a popular claim does not survive the evidence, the book says so — and shows why.
• Fully referenced (APA 7). References at the end of every chapter, plus a master bibliography.

13 chapters · approx. 268 pages · Book A8, Collection A — Physiological & Biological Foundations.