<prompt> In which one of the following type of hernia do the abdominal viscera from a pa of the wall of hernial sac?Pantaloon herniaSliding herniaRichters herniaIndirect inguinal hernia  <response>: As a result of slipping of the posterior parietal peritoneum on the underlying retroperitioneal structures, the posterior wall of the sac in sliding hernia is not formed by peritoneum alone, but by the sigmoid colon and its mesentery on the left, the accident, is called magical thinking. This type of reasoning is typical of children in Piagets preoperational stage age 2-7 years. 