Image Description: Illustration showing venous return flow through veins with valve closed. Venous return is the rate of blood flow back to the heart. This illustration demonstrates how blood returns to the heart as it is pumped up through the veins back to the heart. The valves inside the veins prevent the blood from falling back down the vein as the valves close behind blood flow and therefore helps blood flow as it circulates around the body. Image File Sizes: Size Pixels Inches cm Small 316x600px 1.1x2.0” @300dpi4.3x8.3" @72dpi 2.7x5.1cm @300dpi11.1x21.2cm @72dpi Medium 632x1200px 2.1x4.0” @300dpi8.7x16.7" @72dpi 5.4x10.2cm @300dpi22.3x43.3cm @72dpi Large 1452x2757px 4.8x9.2” @300dpi20.1x38.2" @72dpi 12.3x23.3cm @300dpi51.2x97.2cm @72dpi Anatomy Visible in the Medical Illustration Includes: Veins, blood, valves Image created by: Joanna Culley
