Kidney Kidney The kidneys are two bean-shaped organs found in vertebrates. They are located on the left and right in the retroperitoneal space, and in adult humans are about in length. They receive blood from the paired renal arteries; blood exits into the paired renal veins. Each kidney is attached to a ureter, a tube that carries excreted urine to the bladder. The nephron is the structural and functional unit of the kidney. Each adult kidney contains around 1 million nephrons. The nephron utilizes four processes to alter the blood plasma which flows to it: filtration, reabsorption, secretion, and excretion. The
Vaginal artery Vaginal artery The vaginal artery is an artery in females that supplies blood to the vagina and the base of the bladder. The vaginal artery is usually defined as a branch of the internal iliac artery. Some sources say that the vaginal artery can arise from the internal iliac artery or the uterine artery. However, the phrase vaginal branches of uterine artery is the Terminologia Anatomica term for blood supply to the vagina coming from the uterine artery. Some texts consider the inferior vesical artery to be found only in males, and that this structure in females is a vaginal