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.
Irritation of the bladder and urethra can result from trauma or can be due to chemicals in soaps, spermicides, lubricants, bubble baths, or other substances. Inflammatory causes of urinary urgency include inflammation of the urethra (urethritis), prostate (prostatitis), or bladder (cystitis). Infections of the bladder or prostate and sexually transmitted diseases, such as gonorrhea and Chlamydia, can also cause urinary urgency.