40 Digestive System Exam Questions With Correct Detailed Answers 100% Verified.

mechanical processing, secretion, digestion, absorption, elimination - correct answer 5 functions of digestive system 9 - correct answer human digestive system is ? m long Mouth - correct answer Oral cavity. Its teeth break food into smaller bits. Tongue mixes food with saliva. Pharynx - correct answer throat, Entrance to the gut and respiratory system. Action of the epiglottis keeps food from entering the trachea. Salivary Glands - correct answer Produce and secrete saliva, which moistens food and begins the process of carbohydrate digestion. Esophagus - correct answer Muscular tube through which food moves to the stomach. Stomach - correct answer J-shaped muscular sac that receives food and mixes it with gastric fl uid secreted by cells in its lining. J - correct answer stomach is ?-shaped Small Intestine - correct answer Longest tube of the gut. Its first part receives secretions from the liver, gallbladder, and pancreas. These secretions help complete the process of digestion. Most water and products of digestion are absorbed across the highly folded wall of this organ. Liver - correct answer Produces bile, which aids digestion and absorption of fats. Gallbladder - correct answer Stores and concentrates bile, then secretes it into the small intestine. Pancreas - correct answer Secretes enzymes and bicarbonate (a buffer) into the small intestine. Large Intestine - correct answer colon, Wider than the small intestine, but shorter. It absorbs most remaining water, thus concentrating any undigested waste and forming the feces. Rectum - correct answer Expandable sac that stores feces. Anus - correct answer Opening through which feces are expelled from the body. sphincter - correct answer smooth muscle that prevents back-flow of food enzyme - correct answer liver secretes ? enzyme - correct answer pancreas secretes ? bile - correct answer gallbladder stores and secretes ? liver - correct answer ? produce bile chyme - correct answer food plus enzyme small intestine - correct answer absorbs nutrients and water, digests carbohydrates, lipids, and proteins diffuse - correct answer nutrients ? to blood for circulation dentin - correct answer teeth consist of mostly bonelike ? which is a protein with Calcium enamel - correct answer hard layer that covers crown salivary amylase - correct answer hydrolyses starch into disaccharides salivary glands - correct answer secrete salivary amylase that hydrolyses starch into disaccharides mouth, small intestine - correct answer carbohydrate breakdown begins in ? and is completed in ? stomach, small intestine - correct answer protein breakdown begins in ? and is completed in ? small intestine - correct answer lipids are digested in ? mucosa - correct answer stomach ?, mucus-secreting epithelium) secretes gatric fluid containing hydrochloric acid and enzymes that begin protein digestion gastric fluid - correct answer contains hydrochloric acid and enzymes that begin protein digestion gastrin - correct answer signals secretion of acid and pepsinogens acid - correct answer unfolds proteins pepsin - correct answer breaks proteins into peptides bicarbonate - correct answer ? from pancreas buffers acids so enzymes can work in small intestine bile - correct answer mixture of salts, pigments, cholesterol, lipids that emulsifies fats into small drops that enzymes can break down into fatty acids and monoglycerides nervous, endocrine, nerves - correct answer ? and ? systems and ? of gut wall control digestion larger - correct answer larger meal stimulates ? contractions sympathetic - correct answer ? neurons slow digestion during stress or exercise gastrin - correct answer stimulates stomach acid secretion cholecystokinin - correct answer stimulates pancreatic enzyme secretion and gallbladder contraction (CKK) secretin - correct answer stimulates pancreas to secrete bicarbonate and slows contractions of small intestine brush border cells - correct answer have microvilli project into lumen, function in both digestion and absorption intestinal lining - correct answer cells in ? secrete digestive enzymes, hormones, mucus, and lysozyme lysozyme - correct answer breaks down proteins transport proteins - correct answer move salts, sugars, amino acids from intestinal lumen , into brush border cells, then into interstitial fluid in a villus osmotic gradient - correct answer water follows solutes by ? lipoprotein - correct answer fatty acids and monoglycerides combine with proteins to form ? lymph - correct answer from interstitial fluid, triglycerides enter ? vessels, which empty into the bloodstream 1.5 - correct answer large intestine is wider than small intestine, but is much shorter, only ? m long cecum - correct answer ascending colon begins at ?, which appendix is attached rectum - correct answer descending colon attaches to ? bacteria - correct answer colon has moderate pH level for ? to grow