Shirazi sometimes consider themselves a separate ethnic group from the Swahili, but Swahili is their mother tongue. The famous elite Mazrui family of Mombasa are Shirazis. The Bajun, considered a separate ethnic group in the Kenya census, are also Swahili and sometimes call themselves Shirazi.
The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.
The pancreas does two main things: 1  It releases powerful digestive enzymes into the small intestine to aid the digestion of food. 2  It releases the hormones insulin and glucagon into the bloodstream. 3  These hormones help the body control how it uses food for energy.