Check your grammar now! : a complex sphincter closing the duodenal orifice of the common bile duct.
This Living Encyclopedia of East Africa is intended to provide information on the countries that primarily make up Swahili-speaking region of East Africa in a concise form. These countries are Kenya, Tanzania, Uganda, Rwanda, and Burundi.
Quick Answer. The five regions of Africa are Northern Africa, Western Africa, Middle (Central) Africa, Eastern Africa and Southern Africa. Each individual region is categorized directionally, by cardinal (compass) direction. Continue Reading.