Function of the Digestive System. The digestive system is a series of hollow organs joined in a long tube from the mouth to the anus. The main function of the digestive system is to break down the food we eat into smaller parts so the body can use them for energy and cell nourishment.wo solid organs, the liver and the pancreas, produce digestive juices that reach the intestine through small tubes. In addition, parts of other organ systems (for instance, nerves and blood vessels) play a major role in the digestive system.
Nigeria is a federal republic with a presidential system. The constitution provides for separation of powers among the three branches of government. General elections held in February 1999 marked the end of 15 years of military rule and the beginning of civilian rule based on a multiparty democracy.
Governments can be broadly categorized as Types of Democracy, Republic Government, types of government that are based on Economic Systems, Types of Monarchy, Types of Oligarchy, Autocracy Examples and all Other Governments.Different types of governments have their own characteristics, advantages, and disadvantages.