<p>Introductory Human Physiology is an online course from Duke University on Coursera, taught by Jennifer Carbrey and Emma Jakoi. It introduces the body's major organ systems and the integrated principles of homeostasis that govern their function.</p> <ul> <li>Open to all; no prior experience is required, though elementary biology is helpful.</li> <li>Covers the nervous, cardiovascular, respiratory, endocrine, reproductive, gastrointestinal, urinary, and muscular systems plus the senses.</li> <li>Includes an immersive virtual-reality experience that lets learners explore structures inside the human body and measure blood pressure.</li> <li>Self-paced on Coursera with a flexible schedule — around 10 hours of study per week.</li> </ul> <p>Free to audit; a paid certificate option and financial aid are available.</p>