RT Book, Section A1 Phillips, Raymond E. SR Print(0) ID 1175311521 T1 Effect of Gravity T2 Venous Insufficiency YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781260461268 LK accesscardiology.mhmedical.com/content.aspx?aid=1175311521 RD 2024/11/08 AB Gravity, simply put, is the force of attraction between the earth and the objects and beings on it. Gravity is ubiquitous and constant. Its effects are so predictable in everyday life that we rarely ever think about it. Nevertheless, a brief orientation to the effects of gravity on fluids may be helpful for understanding the medical problems that result when the “anti-gravitational” system of the circulation becomes defective.