Digestion of Carbohydrates Flashcards Preview

GI Exam 1 > Digestion of Carbohydrates > Flashcards

Flashcards in Digestion of Carbohydrates Deck (14):
1

What is the least common saccharide in our diet?

Maltose

2

Where is maltose formed?

From digestion of starches

3

What is amylose?

A straight chain starch

4

What is amylopectin?

A branched starch

5

What is dietary fiber?

Nondigestible polysaccharides found in the cell wall

6

What bonds found in dietary fiber are we unable to digest?

beta-glycoside bonds

7

Is glycogen or amylopectin more branched?

Glycogen

8

What inactivates salivary amylase?

Gastric acid

9

Where are the majority of carbohydrates absorbed?

In the microvilli of the small intestine (brush border)

10

What carbohydrates need active transport to be absorbed?

Glucose
Galactose

11

What carbohydrate uses facilitated diffusion to be absorbed?

Fructose

12

How is glucose absorbed?

In the brush border of the SI by sodium-glucose cotransporter-1 (SGLT-1) (1 Na per glucose)

13

How are glucose, galactose and fructose absorbed into the basolateral membrane?

GLUT2 transporter

14

Where are carbohydrates digested?

Mouth: salivary amylase
Duodenum: pancreatic amylase