1 A blood clot that forms inside one of your veins or arteries is called a thrombus. A thrombus may also form in your heart.  A thrombus that breaks loose and travels from one location in the body to another is called an embolus.
The kidneys. The kidneys do vital work in the body filtering blood removing waste into urine, and balancing electrolyte levels. Our blood in our bodies passes through the kidneys several times a day. The kidneys are located at the back of the abdomen. Each kidney is about the size of a fist - 10-12.5cm long.
Your Kidney Location and Anatomy. You have two kidneys and the kidney location is on either side of the spine at the edge of your ribs. Each kidney is contained within a strong fibrous covering called the renal capsule.The Renal Capsule. The renal capsule is tough and protects the kidney, but it does not allow it to expand.our back will be very tender at the kidney location. When your kidney is swollen and the renal capsule becomes tight and painful, you will have mid to lower back pain, and your back will be very tender over your kidney.