Question
Product of digestion that diffuse into parts of the villus and which part
Answers
GPT-4o mini
During digestion, the products of food breakdown are absorbed in the small intestine, particularly in the villi, which are tiny finger-like projections that increase the surface area for absorption.
1. **Carbohydrates**: These are broken down into simple sugars like glucose, fructose, and galactose. These monosaccharides are absorbed primarily through the microvilli of enterocytes (the cells lining the villi) into the bloodstream via specific transporters.
2. **Proteins**: Proteins are digested into peptides and amino acids. Amino acids and small peptides are absorbed through the epithelium of the villi, again using specific transporters that facilitate their movement into the bloodstream.
3. **Lipids**: Fats are emulsified by bile salts and digested by pancreatic lipase into fatty acids and monoglycerides. The products of lipid digestion are absorbed into the enterocytes, where they can be reassembled into triglycerides and packed into chylomicrons. These chylomicrons then enter the lymphatic system (specifically into lacteals, which are part of the villi) before eventually reaching the bloodstream.
In summary, the parts of the villus involved in the absorption of these digestion products are the enterocytes (the epithelial cells) and the lacteals (for fats).
1. **Carbohydrates**: These are broken down into simple sugars like glucose, fructose, and galactose. These monosaccharides are absorbed primarily through the microvilli of enterocytes (the cells lining the villi) into the bloodstream via specific transporters.
2. **Proteins**: Proteins are digested into peptides and amino acids. Amino acids and small peptides are absorbed through the epithelium of the villi, again using specific transporters that facilitate their movement into the bloodstream.
3. **Lipids**: Fats are emulsified by bile salts and digested by pancreatic lipase into fatty acids and monoglycerides. The products of lipid digestion are absorbed into the enterocytes, where they can be reassembled into triglycerides and packed into chylomicrons. These chylomicrons then enter the lymphatic system (specifically into lacteals, which are part of the villi) before eventually reaching the bloodstream.
In summary, the parts of the villus involved in the absorption of these digestion products are the enterocytes (the epithelial cells) and the lacteals (for fats).