The phrase "dietary amino acids are absorbed during digestion" is used to describe when: Amino acids are cleaved apart by different enzymes within the digestive tract. Amino acids are transported from the intestinal lumen into the intestinal cells. Amino acids form hydrogen bonds with water in the environment. Amino acids bind to taste receptors on the surface of the tongue.
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- Figure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.Name the major organs of the digestive system. Digestion (di-jest′yun) is the mechanical and chemical breakdown of foods and the absorption of the resulting nutrients by cells. Mechanical digestion breaks large pieces of food into smaller ones without altering their chemical composition. Chemical digestion breaks down larger nutrient molecules into simpler chemicals. The organs of the digestive system carry out these processes. The digestive system consists of the alimentary canal (al″i-men′tar-e kah-nal′), extending from the mouth to the anus, and several accessory organs that secrete into the canal substances that are used in digestion. The alimentary canal (from beginning to end) includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anus. The accessory organs include the salivary glands, liver, gallbladder, and pancreas (fig. 15.1; see reference plates 4, 5, and 6). Overall, the digestive system is a tube, open at both ends, that has an…*The term ____ refers to the process of swallowing food. Group of answer choices Mastication Ingestion Peristalsis Deglutition * Which of the following is a gastric-phase stimulus for acid secretion? Group of answer choices sight and smell of food distension of the stomach and the presence of protein and amino acids in the lumen of the stomach the presence of fat and protein digestion products in the lumen of the small intestine chewing and the act of swallowing
- Regarding the functions of the gastrointestinal system, match each term with the phrase that best describes or defines it an enzyme found in saliva and intestinal secretions that breaks down carbohydrate molecules like starches Lipid deposits in the non-adipose compartment of the body, a risk factor for chronic disease regardless of weight A prebiotic - a non-digestible oligosaccharide that provides nourishment for beneficial organisms in the gut A strain of bacteria that's very common in the human gut [Choose ] [Choose ] Bacteroidetes Amylase Lipase Salmonella Brown Fat Inulin Ectopic Fat [Choose] [Choose ]describe the general processes of digestion and absorption of each of the following: carbohydrates, proteins, fats, nucleic acidsWhich of the following descriptions is incorrectly matched to the type of digestion occuring? Acidic pH of gastric juice helping break down proteins and activate enzymes - mechanical digestion Salivary amylase breaking down starch - chemical digestion Peristalsis of the small intestine mixing up chyme - mechanical digestion bile salts helping to emulsify fats and raise the pH - chemical digestion chewing and mixing of food in the mouth - mechanical digestion
- carbohydrate digestion in the oral cavity involves which of the following? Give two answers tongue, teeth, amylase, salivary glandsA E F B G H D J22. Match the term with its descriptions: anal canal, appendix, buccal cavity, colon, esophagus, hard palate, haustra, ileocecal valve, microvilli, mouth, lymphoid nodules, pharynx, plicae, pyloric sphincter, rugae, small intestine, soft palate, stomach, tongue, villi. You may use al gl answers more than once. notiqiozds nietor nolo Finger-like extensions of the intestinal mucosa that increase the surface area: Villi nin Cua.couerby GM.AS (20jon ouo9i Collections of lymphatic tissue found in the submucosa of the small intestine; provide 92 fig tes protection against bacteria: 10 XL mo Folds of the small intestine wall that act like "speed bumps": aboud Two anatomical regions involved in the mechanical breakdown of food: mouth Organ that mixes and positions food Common passage for food and air: Phorynx Literally a food chute; has no digestive or absorptive role: Esophaqus and 2roo12: in the mouth: Tongue o el 22sq of yilidsni Folds of the stomach mucosa that allow stretching: Tril gio…
- Proteasas are enzymes that break down proteins. Gastric proteasas are found in the stomach; intestinal proteases are found in the small intestine. Estimate the optimum pH for these two enzymes and identify as acidic or basic: Gastric proteases: pH= ____; acidic or basic Intestinal proteases activity: pH= ____; acidic or basicThe salivary glands, pancreas, liver and gall bladder are considered accessory organs in the digestive system. They are not part of the digestive track but contribute to digestion. List the accessory organ associated with each the following functions. Produces bicarbonate to neutralize acidity as stomach contents enter the small intestine. Stores and releases bile to aid in breakdown of fats. Produces bile. Produces enzymes that enter the small intestine and aid in digestion. Moistens food Produces salivary amylase Produces hormones that regulate blood glucose levels. Stores glucose as glycogen (a polysaccharide)Which of the following statements regarding digestive systems are correct? Glucose monomers are linked together by alpha 1-4 glycosidic bonds in both starch and cellulose. Gastrin is produced by exocrine cells of the gastric glands. Pepsinogen and gastric acid (HCl) are both secreted into the lumen of the stomach.