Research Home Research & Funding Why are the kidneys important? How do my kidneys work? How does blood flow through my kidneys? Clinical Trials The kidneys are two bean-shaped organs, each about the size of a fist. They are located just below the rib cage, one on each side of your spine. Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make...

What is the heart? The heart is a fist-sized organ that pumps blood throughout your body. It's the primary organ of your circulatory system. Your heart contains four main sections (chambers) made of muscle and powered by electrical impulses. Your brain and nervous system direct your heart’s function. What does a heart diagram look like? The inside and outside of your heart contain components...