题目
题目

NUTR-10-42182-F25 Exam/Quiz # 1

单项选择题

The majority of digestion and absorption occurs in the

选项
A.stomach
B.small intestines
C.large intestines
D.mouth
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标准答案
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思路分析
To approach this question, consider where the main job of digestion and nutrient absorption happens in the human digestive system. Option 1: stomach. While the stomach does chemical digestion (notably of proteins via pepsin) and mechanical digestion, it handles only a portion of digestion and very little nutrie......Login to view full explanation

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类似问题

You cannot wait until finals are over to have your favorite meal and sleep. You know that 90% of the absorption of the food you eat will be digested in the _____ .

Complete the table describing the digestion and absorption process in each part of the gastrointestinal tract, and the destination of the digestion products. Nutrient Mouth Stomach Small intestine Destination Protein [ Select ] Mechanical breakdown Chemical breakdown [ Select ] Proteases break polypeptides into amino acids Free fatty acids in miscelles form Mechanical breakdown Pepsin breaks proteins into polypeptides [ Select ] Proteases break polypeptides into amino acids, dipeptides and tripeptides Acid denatures proteins [ Select ] Short chain fatty acids diffuse into blood vessels Amino acids and small peptides enter blood vessels Monosaccharides enter blood vessels Carbohydrates Mechanical breakdown Salivary amylase starts to break down polysaccharides into disaccharides [ Select ] Chemical breakdown Mechanical breakdown [ Select ] Proteases break polypeptides into amino acids, dipeptides and tripeptides Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids [ Select ] Short chain fatty acids diffuse into blood vessels Monosaccharides enter blood vessels Amino acids and small peptides enter blood vessels Lipid Mechanical breakdown [ Select ] Mechanical breakdown Chemical breakdown [ Select ] Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides Proteases break polypeptides into amino acids, dipeptides and tripeptides Bile salts emulsify lipids into smaller droplets. Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids Bile salts form these into micelles [ Select ] Monosaccharides enter blood vessels Short chain fatty acids diffuse into blood vessels Amino acids and small peptides enter blood vessels

Complete the table describing the digestion and absorption process in each part of the gastrointestinal tract, and the destination of the digestion products. Nutrient Mouth Stomach Small intestine Destination Protein [ Select ] Mechanical breakdown Chemical breakdown [ Select ] Mechanical breakdown Pepsin breaks proteins into polypeptides Free fatty acids in miscelles form Proteases break polypeptides into amino acids [ Select ] Acid denatures proteins Proteases break polypeptides into amino acids, dipeptides and tripeptides [ Select ] Short chain fatty acids diffuse into blood vessels Monosaccharides enter blood vessels Amino acids and small peptides enter blood vessels Carbohydrates Mechanical breakdown Salivary amylase starts to break down polysaccharides into disaccharides [ Select ] Chemical breakdown Mechanical breakdown [ Select ] Proteases break polypeptides into amino acids, dipeptides and tripeptides Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids [ Select ] Short chain fatty acids diffuse into blood vessels Amino acids and small peptides enter blood vessels Monosaccharides enter blood vessels Lipid Mechanical breakdown [ Select ] Mechanical breakdown Chemical breakdown [ Select ] Proteases break polypeptides into amino acids, dipeptides and tripeptides Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides Bile salts emulsify lipids into smaller droplets. Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids Bile salts form these into micelles [ Select ] Monosaccharides enter blood vessels Amino acids and small peptides enter blood vessels Short chain fatty acids diffuse into blood vessels

Complete the table describing the digestion and absorption process in each part of the gastrointestinal tract, and the destination of the digestion products. Nutrient Mouth Stomach Small intestine Destination Protein [ Select ] Mechanical breakdown Chemical breakdown [ Select ] Free fatty acids in miscelles form Pepsin breaks proteins into polypeptides Mechanical breakdown Proteases break polypeptides into amino acids [ Select ] Acid denatures proteins Proteases break polypeptides into amino acids, dipeptides and tripeptides [ Select ] Amino acids and small peptides enter blood vessels Monosaccharides enter blood vessels Short chain fatty acids diffuse into blood vessels Carbohydrates Mechanical breakdown Salivary amylase starts to break down polysaccharides into disaccharides [ Select ] Chemical breakdown Mechanical breakdown [ Select ] Proteases break polypeptides into amino acids, dipeptides and tripeptides Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides [ Select ] Monosaccharides enter blood vessels Short chain fatty acids diffuse into blood vessels Amino acids and small peptides enter blood vessels Lipid Mechanical breakdown [ Select ] Chemical breakdown Mechanical breakdown [ Select ] Pancreatic amylase breaks polysaccharides & oligosaccharides into disaccharides Bile salts emulsify lipids into smaller droplets. Pancreatic lipase breaks triglycerides into monoglycerides and fatty acids Bile salts form these into micelles Proteases break polypeptides into amino acids, dipeptides and tripeptides [ Select ] Amino acids and small peptides enter blood vessels Monosaccharides enter blood vessels Short chain fatty acids diffuse into blood vessels

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