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.
Retroperitoneal space is the anatomical space in the abdominal cavity behind the parietal peritoneum. It extends from the 12 th thoracic vertebra and 12 th rib above to the sacrum and iliac crest below.The floor of the space, that is the posterior wall of the abdomen in this region, is formed by; 1  Psoas muscle.etroperitoneal space is the anatomical space in the abdominal cavity behind the parietal peritoneum. It extends from the 12 th thoracic vertebra and 12 th rib above to the sacrum and iliac crest below. The floor of the space, that is the posterior wall of the abdomen in this region, is formed by; 1  Psoas muscle.