The intestine (colon or ileum) is brought to the stoma to create an artificial outlet for the gastrointestinal tract (ostomy). This allows safe removal of waste material from food digestion when a portion of the intestine is removed or needs time to heal.
Key difference: The main difference between USA and Canada is in their government. USA is a federal constitutional republic, whereas Canada is a constitutional monarchy. Further differences include geographic and climate. Canada also differs in its stance against some political and cultural aspects.
Some facts about US. The United States of America is simply referred to as the United States or the US. It is a federal constitutional republic consisting of fifty states and a federal district. The US lies between the Pacific Ocean and the Atlantic Ocean and is bordered by Canada in the north and Mexico in the south.