Digestion and absorption - Digestion and absorption of carbohydrates - Carbohydrate digestion and absorption
3 important questions on Digestion and absorption - Digestion and absorption of carbohydrates - Carbohydrate digestion and absorption
Where are the disaccharidases located which catalyze the hydrolysis of disaccharides?
On the brush border of the intestinal mucosal cells.
What are the four disaccharidases?
1. Maltase; hydrolyse maltose into two molecules of glycose
2. Sucrase-isomaltase; hydrolyse sucrose to glucose and fructose, and isomaltose to two molecules of glycose
3. Lactase; hydrolyse lactose to glucose and galactose
4. Trehalase; hydrolyse trehalose tot two molecules of glucose
Which two mechanisms absorp monosaccharides in the small intestine?
1. A sodium dependent process; sodium pump, sodium/potassium ATPase, sodium secreted in alkaline pancreatic juice
2. Carrier-mediated diffusion; three different one for fructose, monosaccharides and sugar alcohols
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