This simple website teaches the basic principles of (human) physiology, and, it is free for all!
You can also copy and download whatever parts or chapters you like, for yourself , your colleagues or your students.
Chapter A: Basic Human Physiology
A.1. Basic Physiology:
A.2. The Cell:
A.3.The Nerve Cell:
A.4. The Muscle Cell:
Chapter B: Cardiovascular System
B. Introduction:
B.3. The Electrical Heart:
B.4. The Contracting Heart:
B.5. The Vascular System:
B.6. Cardiac Regulation:
B.7. CVS Pathophysiology:
Chapter C: Respiratory System
C.1.-C.3. Introduction:
C.4. The Lungs:
C.5. Gas Transport:
C.7. Pathophysiology:
Chapter E: Gastrointestinal System
Chapter F: Urinary System
Chapter G: Genital System
Chapter H: Nervous System
H.3.3. Special Senses:
H.3.3.1. Vision:
H.3.3.2. Hearing:
H.3.3.3-5 Equilibrium, Smell & Taste:
Latest Update:
January 23, 2026
BasicPhysiology.org contains
(at this moment..):
8 chapters
124 pages
578 images
39 animations
501 MCQ’s 123 PDF’s