What system digest food?

Answer 1

"What's the first step in digesting food? Believe it or not, the digestive process starts even before you put food in your mouth. It begins when you smell something irresistible or when you see a favorite food you know will taste good. Just by smelling that homemade apple pie or thinking about how delicious that ice cream sundae is going to taste, you begin to salivate — and the digestive process kicks in, preparing for that first scrumptious bite. If it's been a while since your last meal or if you even think about something tasty, you feel hungry. You eat until you're satisfied and then go about your business. But for the next 20 hours or so, your digestive system is doing its job as the food you ate travels through your body. Food is the body's fuel source. The nutrients in food give the body's cells the energy and other substances they need to operate. But before food can do any of these things, it has to be digested into small pieces the body can absorb and use. During the process of absorption, nutrients that come from the food (including carbohydrates, proteins, fats, vitamins, and minerals) pass through channels in the intestinal wall and into the bloodstream. The blood works to distribute these nutrients to the rest of the body. The waste parts of food that the body can't use are passed out of the body as feces." Here is a diagram with roll-overs to explain the whole digestive system process: http://kidshealth.org/misc/movie/bodybasics/digestive_system.html You can check out this link to also find more information and facts on Harp Seals: http://kidshealth.org/teen/nutrition/general/digestive_system.html (Bibliography) "Digestive System ." KidsHealth - the Web's most visited site about children's health. 25 May 2009

Answer 2

The digestive system of a human starts with chewing food and the saliva that begins the digestive process. It continues with the esophagus, the stomach, the small intestine, the large intestine (colon) then the rectum and out the anus.

Answer 3

The digestive system digests food.

Answer 4

RESPIRATION