24. Carbohydrate absorption Flashcards Preview

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Flashcards in 24. Carbohydrate absorption Deck (10):
1

Only monosaccharides (glucose, galactose, fructose) are absorbed by
.

enterocytes.

2

Glucose and galactose are taken up by

SGLT1 (Na+ dependent).

3

Fructose is taken up by facilitated diffusion by

GLUT-5.

4

All are transported to blood by

GLUT-2.

5

D-xylose absorption test:

distinguishes GI mucosal damage from other causes of malabsorption

6

• Which of these sugars is/are not absorbed by enterocytes: glucose, galactose, fructose, sucrose?

Sucrose, a disaccharide (only monosaccharides are absorbed by enterocytes)

7

• Glucose and galactose are taken up by this transporter, which is dependent on this ion.

Sodium-glucose linked transporter (SGTP1); sodium ion

8

• ____ is the transporter that takes up fructose in enterocytes via what method.

Glucose transporter 5 (GLUT-5); facilitated diffusion

9

• All monosaccharides are transported from the enterocytes to the blood by what transporter?

Glucose transporter 2 (GLUT-2)

10

• A patient with carbohydrate malabsorption might undergo which test to distinguish GI mucosal damage from other causes of malabsorption?

D-xylose absorption test

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