👉 "Perivitelline" is a term used in medicine to describe the process of the formation of new blood vessels within the lining of the urinary bladder. It is primarily responsible for preventing the formation of kidney stones and other bladder-related issues. The process begins with the formation of new blood vessels in the bladder's peritoneum, or abdominal wall tissue. These vessels are called perivitelline vessels because they are similar to those found in the lining of the kidneys, but they are