There are generally 2 kidneys in the human body, they are distributed in the abdominal cavity on both sides of the spine, where the right kidney its specific location in the right side of the retroperitoneal spine, its upper end in the flat 12th thoracic vertebrae, the lower end of the flat 3rd lumbar vertebrae, within this range. The size of the kidney is 10.5-12 cm in length, 5-7.5 cm in width, and 2.5-3 cm in thickness. if viewed from behind, it is positioned at the intersection of the spine and the ribs, which is the location of the kidney. The left kidney is on the left side of the spine, a little higher than the right kidney, its upper end is flat at the 11th thoracic vertebrae, and its lower section is flat at the 2nd lumbar vertebrae, which is the exact position of the two kidneys.