1 The average worker in an office uses 10,000 sheets of paper annually. 2  It can cost up to 31 times the original cost to send information on paper (printing, copying, postage, storage, filing, recycling, etc.). 3  7.5 billion documents are created and 15 trillion copies are made each year.
Organs are described as retroperitoneal if they are located behind the parietal peritoneum. Retroperitoneal organs include: the kidneys, adrenal glands, ureters, urinary bladder, part of the oesophagus, rectum, ovaries, uterus, aorta and caudal Vena Cava.
Kidney Anatomy. The kidneys are bean-shaped organs that lie retroperitoneal in the superior lumbar region. The medial surface is concave and has a renal hilus that leads into a renal sinus, where the blood vessels, nerves, and lymphatics lie.he kidneys are bean-shaped organs that lie retroperitoneal in the superior lumbar region. The medial surface is concave and has a renal hilus that leads into a renal sinus, where the blood vessels, nerves, and lymphatics lie.