Yes, the kidneys are posterior to the intestines - meaning they're located behind the intestines.
The retroperitoneal space is located behind the peritoneum. It contains organs such as the kidneys, adrenal glands, pancreas, and parts of the intestines and blood vessels. These organs have a direct relation to the peritoneum but lie outside of it.
Retroperitoneal is the medical term meaning behind the peritoneum. The kidneys and ureters are retroperitoneal.
The kidneys are organs that are not covered by visceral peritoneum, instead they are located behind the peritoneum in the retroperitoneal space.
Retroperitoneal space
The peritoneum, which is the lining of the abdominal cavity.
Kidneys are retroperitoneal and so lie between the peritoneum and the abdominal wall, in the retroperitoneal space (a part of the abdominal cavity).
Organs, like most of the intestine, that are almost completely invested by peritoneum are connected to the body wall by a mesentery. Other viscera, however, such as the kidneys, are retroperitoneal; i.e., they lie on the posterior abdominal wall and are covered by peritoneum only anteriorly.
The retroperitoneal space is the part of the abdominal cavity that lies behind the peritoneum, a membrane that typically lines the inside of the abdomen. Inside the retroperitoneal (deep to the peritoneum) space, there are the kidneys, adrenal glands, bladder, and ureters. The aorta and inferior vena cava vessels are located within the space as well as part of the esophagus and rectum. These are called the primary retroperitoneal organs, meaning they typically form during gestation behind the peritoneum and remain there throughout development. All of the organs in the space typically feature some peritoneum tissue attached to their front, or anterior side, although no anatomical structures are generally a part of this space.
The kidneys are located in the abdominal cavity, one on each side of the spine. They are situated behind the peritoneum, close to the lower back and underneath the rib cage.
The term retroperitoneal refers to the area behind the peritoneum, the membrane lining the abdominal cavity. Organs located in the retroperitoneal space include the kidneys, adrenal glands, and part of the pancreas. These organs are positioned outside the peritoneal cavity and are not covered by the peritoneum.
The kidneys are considered to be retroperitoneal.
The structures that are retroperitoneal in a cat's urinary system are the kidneys, the ureters, and the urinary bladder. Retroperitoneal means that these structures can be found behind the peritoneum.