1) What is the meaning of digestion? a) The process by which your body breaks down food into two small nutrient molecules b) The process by which your body sends food into the large intestine 2) What is absorption? a) The process by which nutrient molecules pass through the wall of your digestion system into your blood b) The process by which nutrient molecules pass through the wall of the small intestine 3) What is the fluid released when your mouth waters?? a) Saliva b) Water 4) What are enzymes? a) Proteins that speed up chemical reactions in the body b) Chemicals that speed up proteins reactions in your body 5) What tissue seals off your windpipe preventing the food from entering when you swallow? a) Epiglottis b) Esophagus 6) What is the esophagus?? a) A muscular tube that connects the mouth to the stomach b) The flap of tissue that seals off your windpipe, preventing food from entering 7) What is the esophagus lined with? a) Mucus b) Smooth tissue 8) What is mucus? a) A thick, slippery substance produces by the body b) A thin substance produced by the body to help you swallow 9) What does mucus do? a) It makes food easier to swallow and move along b) Keeps your throat lubricated 10) What are involuntary waves of muscle contraction that happen after food enters the esophagus?, a) Peristalsis b) Polarized 11) What is the stomach? a) A J-shaped, muscular pouch located in the abdomen b) An O-shaped, pouch located near the liver 12) What chemically digests the proteins in your food, breaking them down into short chains of amino acids? a) Pepsin b) Peristalsis

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