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Digestion

The digestive process

QuestionAnswer
digestion The process by which your body breaks down food into small nutrient molecules.
absorption The process by which nutrient molecules pass through the wall of your digestive system into your blood.
saliva fluid released when your mouth waters.Plays an important role in mechanical and chemical digestion.
mechanical digestion The breaking down of food into small parts using the teeth or the muscles of the stomach.
chemical digestion The breakdown of complex molecules into simpler ones using enzymes.
enzyme A protein that speeds up chemical reactions in the body.
esophagus A muscular tube that is lined with smooth muscle and connects the mouth to the stomach.
epiglottis A flap of tissue that seals off the windpipe to prevent food from entering.
mucus Mucus is a thick slippery substance produced by the body.
peristalsis The involuntary waves of muscle contractions.
stomach A j-shaped, muscular pouch located in the abdomen.
pepsin This digestive juice chemically breaks down proteins in your food.
hydrochloric acid A very strong acid.
small intestine the part of the digestive system where most chemical digestion and absorption of nutrients takes place.
liver The largest and heaviest organ in the body. Produces bile.
bile A substance that breaks up fat particles.
gallbladder An organ that stores bile.
pancreas Produces enzymes that flow into the small intestine. They break up starches, proteins and fats.
villi finger like structures that cover the lining of the small intestine and increase the surface area of the intestines, aiding in absorption of nutrients.
large intestine water is absorbed into the bloodstream and waste is readied for elimination.
rectum the end of the large intestine and compressed and into a solid form.
anus The muscular opening at the end of the rectum.
Created by: lfarrington
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