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.
Generally, most cases of urethritis can be attributed to a bacteria or a virus. The same bacteria that can cause bladder and kidney infections can also infect the lining of the urethra. Bacteria found naturally in the genital area may also cause urethritis if they enter the urinary tract.emen also passes through the male urethra. The core cause of urethritis is usually infection. This can cause the urethra to become irritated and inflamed. According to the University of Maryland Medical Center, both males and females can develop urethritis.