Assistant principals aid the principal in the overall administration of the school. Some assistant principals hold this position for several years to prepare for advancement to principal jobs; others are career assistant principals.n larger school systems, a principal is often assisted by someone known as a vice-principal (Republic of Ireland: deputy principal) or assistant principal.
Causes. Pressure on the bladder during delivery is the main cause of a ruptured bladder, although a weakness in the bladder wall may make it susceptible to a rupture. In older horses, a ruptured bladder may be caused by an accident or related to a urinary obstruction.
UTIs can be caused by bacterial infection or inflammation of the urinary tract. Your urinary tract is made up of the urethra, bladder, ureters, and kidneys. The ureters are tubes that carry urine from the kidneys to the bladder. Inflammation in any of these organs can cause pain during urination.