GI Part 5- 1

Question 1

What are starch, glycogen, saccharine, and lactose examples of?

Answer 1

Dietary carbs

Question 2

Further digestion of carbs is achieved by __________ enzymes

Answer 2

Pancreatic

Question 3

Digestion is finished by enzymes synthesized by __________ mucosa

Answer 3

Intestinal

Question 4

Absorption of carbs takes place in the duodenum and upper jejunum and is mediated by a ____ dependent transport mechanism (SGLT1) present at the apical membrane, and by ____________ transport mechanism present at both GLTU5 and 2

Answer 4

Na +
Facilitated

Question 5

Where are proteins denatured?

Answer 5

Stomach

Question 6

What are proteins partially hydrolyzed by?

Answer 6

Pepsin

Question 7

Where does final digestion and absorption of proteins take place?

Answer 7

Small intestine

Question 8

What type of peptidases are aminopeptidases and oligopeptidases?

Answer 8

Brush borders

Question 9

How do the amino acids go to the liver?

Answer 9

Portal vein

Question 10

What occurs in the doudenum and aims to reduce the surface area of the hydrophobic lipid droplets?

Answer 10

Emulsification

Question 11

Bile acids emulsify ____ droplets

Answer 11

Fat

Question 12

Bile acids (liver) consist of a _____ ring with a side chain of AA

Answer 12

Sterol

Question 13

What are cholesterol esters, phospholipids, triglyceride?

Answer 13

Dietary lipids

Question 14

Emulsified fat droplets are still too large to enter spaces between __________

Answer 14

Microvilli

Question 15

Pancreas lipases hydrolyze triglycerides into _____________ and free fatty acids

Answer 15

Monoglycerides

Question 16

Fat —> bile salts —> lipase and colipase from pancreas —> degradation products are absorbed by _________ —> FFA and monoglycerides —> chylomicron —> exocytosis —> lymph vessel

Answer 16

Micelles

Question 17

What do monoglycerides, FFA, cholesterol, and liposoluble vitamins form?

Answer 17

Mixed micelles

Question 18

Short chain FA __ ____ form mixed micelles

Answer 18

Do not

Question 19

Once lipids are absorbed:
LCFA fo into the ER for __- ___________ of more complex lipids

Answer 19

Re-esterfication

Question 20

Chylomicrons are released by exocytosis into lymph -> ______ duct —> L subclavian vein —> _______

Answer 20

Thoracic
Blood