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 artery. It descends to the vagina, supplying its mucous membrane. It can send branches to the bulb of the vestibule, the fundus of the bladder, and the contiguous part of the rectum. The vaginal artery is frequently represented by two or three branches. 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